Differential Equations
[1] E. M. Elabbasy and S. H. Saker, Oscillation of nonlinear delay differential equations with several positive and negative coefficients, Kyungpook Mathematical Journal, Vol. 39 (1999), 366-376.
[2] E. M. Elabbasy, S. H. Saker and K. Saif, Oscillation of nonlinear delay differential equations with application to models exhibiting the Allee effect, Far East Journal of Mathematical Sciences, Vol. 1, no. 4 (1999), 603-620.
[3] E. M. Elabbasy, A. S. Hegazi and S. H. Saker, Oscillation of solutions to delay differential equations with positive and negative coefficients, Electronic Journal of Differential Equations 2000, No. 13 (2000), 1-13.
[4] Ravi P. Agarwal and S. H. Saker, Oscillation of solutions to neutral delay differential equations with positive and negative coefficients, International Journal of Differential Equations and Applications 2 (2001), 449-465.
[5] S. H. Saker and E. M. Elabbasy, Oscillation of first order neutral delay differential equations, Kyungpook Mathematical Journal 41 (2001), 311-321.
[6] W. T. Li and S. H. Saker, Oscillation of nonlinear neutral delay differential equations and applications, Annales Polinici Mathematici 77 (2001), no. 1, 39-51.
[7] S. H. Saker, Oscillation of higher order neutral delay differential equations with variable coefficients, Dynamic Systems & Application 11 (2002), No.1, 107-125.
[8] I. Kubiaczk and S. H. Saker, New oscillation criteria of first order delay differential equations, Demonstr. Math. 35, no.2 (2002), 313-324.
[9] W. T. Li and S. H. Saker, Oscillation of solutions to impulsive delay differential equations, Commentationes Mathematicae XLII (2002), 63-74.
[10] I. Kubiaczyk, S. H. Saker, Oscillation of solution of neutral delay differential equations, Math. Slovaca 52 (2002), no. 3, 343-359.
[11] S. H. Saker and I. Kubiaczyk, Oscillation of nonlinear neutral delay differential equations, J. Appl. Analysis 8 (2002), no.2, 261-278.
[12] S. H. Saker, Oscillation of second order neutral delay differential equations of Emden-Fowler type, Acta Math. Hungarica 100, no.1-2 (2003), 7-32.
[13] E. M. Elabbasy and S. H. Saker, Oscillation of delay differential equations with several positive and negative coefficients, Disc. Math. Differential Inclusion, 23 (2003) 39-52.
[14] S. H. Saker, P.Y.H. Pang and Ravi P Agarwal, Oscillation theorems for second order nonlinear functional differential equations with damping, Dynamic Sys. Appl. 12 (2003), 307-322.
[15] I. Kubiaczyk and S. H. Saker and J. Morhalo, New oscillation criteria for nonlinear neutral delay differential equations, Appl. Math. Comp. 142 (2-3)(2003), 225-242.
[16] S. H. Saker, Oscillation of solutions of a pair of coupled nonlinear delay differential equations, Portugalae Mathematica 60 (2003), 319-336.
[17] I. Kubiaczyk, W. T. Li and S. H. Saker, Oscillation of higher order delay differential equations with applications to hyperbolic equations, Indian J. Pure & Appl. Math. 34 (2003), 1259-1271.
[18] I. Kubiaczyk and S. H. Saker, Oscillation theorems of second order nonlinear neutral delay differential equations, Disc. Math. Diff. Incl. Cont. Optim. 22 (2002), 185-212.
[19] S. H. Saker and J. V. Manojlovic, Oscillation criteria for second order Superlinear neutral delay differential equations, EJQTDE. 10 (2004), 1-22.
[20] E. M. Elabbasy, T. S. Hassan, S. H. Saker, Oscillation of second-order nonlinear differential equations with a damping term, EJDE Vol. 2005 (2005), No. 76, pp. 1-13.
[21] S. H. Saker, Oscillation criteria of certain class of third-order nonlinear delay differential equations, Math. Slovaca (accepted).
[22] Y. G. Sun and S. H. Saker, Forced Oscillation of higher order nonlinear differential equations, Appl. Math. Comp. (in press).
[23] E. M. Elabbasy, T. S. Hassan, S. H. Saker, Oscillation and nonoscillation of nonlinear neutral delay differential equations with several positive and negative coefficients, , Kyungpook Mathematical Journal (accepted).
[24] E. M. Elabbasy, T. S. Hassan, S. H. Saker, Necessary and sufficient conditions for oscillation of neutral differential equation, Serdica Math. J. 31 (2005), 1001-1012.
[25] E. M. Elabbasy, T. S. Hassan, S. H. Saker, Oscillation criteria for first-order nonlinear neutral delay differential equations, Vol. 2005(2005), No. 134, pp. 1-18.
[26] E. M. Elabbasy, T. S. Hassan, S. H. Saker, New oscillation Criteria for first order nonlinear neutral delay differential equations, J. Appl. Math. Comp. (accepted).
Partial Differential Equations
[1] I. Kubiaczyk, S. H. Saker, Oscillation of parabolic delay differential equations, Demonst. Math. 35, no.4 (2002), 781-792.
[2] I. Kubiaczyk and S. H. Saker, Oscillation of delay parabolic differential equations with several coefficients, J. Comp. Appl. Math. 147 (2002), no. 2, 263-275.
[3] I. Kubiaczyk and S. H. Saker, Oscillation of parabolic delay differential equations with positive and negative coefficients, Commentationes Mathematicae XLII (2002), 221-236.
[4] S. H. Saker, Oscillation of hyperbolic nonlinear differential equations with deviating arguments, Publ. Math. Debr. 62 (2003), 165-185.
Difference Equations
[1] S. H. Saker, Oscillation of nonlinear neutral difference equations, Inter. J. Pure Appl. Math. vol. 1, no. 4 (2002), 459-470.
[2] S. H. Saker, Kamenev-type oscillation criteria for forced Emden-Fowler Superlinear difference equations, Elect. J. Diff. Eqns. 2002 (2002), no. 68, 1-9.
[3] S. H. Saker, New oscillation criteria for second-order nonlinear neutral delay difference equations, Appl. Math. Comp. 142 (1)(2003), 99-111.
[4] S. H. Saker, Oscillation theorems of nonlinear difference equations of second order, Georgian Mathematical J. 10, no.2 (2003), 343-352.
[5] S. H. Saker, Oscillation of second-order perturbed nonlinear difference equations, Appl. Math. Comp. 144 (2-3) (2003), 305-324.
[6] W. T. Li and S. H. Saker, Oscillation of second-order sublinear neutral delay difference equations, Appl. Math. Comp. 146 (2003), 543-551
[7] S. H. Saker and P. J. Y. Wong, Nonexistence of unbounded nonoscillatory solutions of nonlinear perturbed partial difference equations, J. Concrete and Aapplicable Math. 1 (1) (2003), 87-99.
[8] S. H. Saker and S. S. Cheng, Kamenev type oscillation criteria for nonlinear difference equations, Czechoslovak Math. J. 54 (2004), 955-967.
[9] S. H. Saker and S. S. Cheng, Oscillation criteria for difference equations with damping terms, Appl. Math. Comp. 148 (2004), 421-442.
[10] S. H. Saker, Oscillation of second order nonlinear delay difference equations, Bulletin of the Korean Math. Soc. 40 (2003), 489-501.
[11] S. H. Saker, Oscillation theorems for second-order nonlinear delay difference equations, Periodica Math. Hungarica 47 (2003), 201-213.
[12] B. G. Zhang and S. H. Saker, Kamenev-type oscillation criteria for nonlinear neutral delay difference equations, Indian J. Pure Appl. Math 34 (2003), 1571-1584.
[13] I. Kubiaczyk, S. H. Saker, J. Morchalo, Kamenev-type oscillation criteria for sublinear delay difference equations, Indian J. Pure Appl. Math. 34 (2003), 273-284.
[14] S. H. Saker, Oscillation of third-order difference equations, Portugalae Mathematica 61 (2004), 249-257.
[15] S. H. Saker, Oscillation criteria of second-order half-linear delay difference equations, Kyungpook Math. J. (accepted).
[16] I. Kubiaczyk and S. H. Saker, Oscillation and asymptotic behavior of second-order nonlinear difference equations, Fasc. Math. No.34 (2004), 39-54.
[17] Y. G. Sun and S. H. Saker, Oscillation for second-order nonlinear neutral delay difference equations, Appl. Math. Comp. 163 (2005) 909-918.
[18] S. H. Saker, Oscillation and asymptotic behavior of third-order nonlinear neutral difference equations, Dynamic Systems & Applications, (accepted).
[19] S. H. Saker and B. G. Zhang, Oscillation of second-order nonlinear delay damped difference equations, Acta Matematica Sinica, (accepted).
[20] Y. G. Sun and S. H. Saker, On the oscillation of second-order perturbed nonlinear difference equations, Dyn. Sys. Appl. (accepted).
Partial Difference Equations
[1] I. Kubiaczyk and S. H. Saker, Kamenev-type oscillation criteria for hyeperbolic nonlinear delay difference equations, Demonstratio Math. 36, no. 1 (2003), 113-122.
[2] S. H. Saker, Oscillation of parabolic neutral delay difference equations with several positive and negative coefficients, Appl. Math. Comp. 143 (1), (2003), 173-186.
[3] I. Kubiaczyk and S. H. Saker, Oscillation theorems for discrete nonlinear delay wave equations, Z. Angew. Math. Mech. 2003, 83, No. 12, 812-819, (J. Applied Mathematics and Mechanics), (ZAMM).
[4] S. H. Saker, Kamenev-type oscillation criteria for hyperbolic nonlinear neutral delay difference equations, Nonlinear Studies 10 (2003), 221-236.
[5] S. H. Saker, Oscillation of parabolic neutral delay difference equations, Bull. Korean Math. Soc. 41 (2004), no. 4, 619-632.
Mathematical models and Applications
[1] E. M. Elabbasy, S. H. Saker and K. Saif, Oscillation in Host Macroparasite model with delay time, Far East Journal of Applied Mathematics, Vol. 4, no. 2, (2000), 119-142.
[2] I. Kubiaczyk and S. H. Saker, Oscillation and stability of nonlinear delay differential equations of population dynamics, Mathematical and Computer Modeling 35 (2002), 295-301.
[3] S. H. Saker and S. Agarwal, Oscillation and global attractivity in a nonlinear delay periodic model of Respiratory Dynamics, Comp. Math. Appl. 44 (2002), 5-6, 623-632.
[4] S. H. Saker and S. Agarwal, Oscillation and global attractivity in nonlinear delay periodic model of population dynamics, Applicable Analysis 81 (2002), 787-799.
[5] S. H. Saker and S. Agarwal, Oscillation and global attractivity in a periodic Nicholson's Blowflies model, Mathl. Comp. Modelling 35 (2002), 719-731.
[6] S. H. Saker, Oscillation and global attractivity of Hematopoiesis model with delay time, Applied Math. Comp. 136 (2003), no.2-3, 27-36.
[7] S. H. Saker and B. G. Zhang, Oscillation in a discrete partial Nichlson’s Blowflies model, Mathl. Comp. Modelling 36 (2002), 9-10, 1021-1026.
[8] S. H. Saker, Oscillation and global attractivity in hematopoiesis model with periodic coefficients, Appl. Math. Comp. 142 (2-3) (2003), 477-494.
[9] B. G. Zhang and S. H. Saker, Oscillation in a discrete partial delay survival red blood cells model, Mathl. Comp. Modeling 37 (2003), 659-664.
[10] I. Kubiaczyk and S. H. Saker, Oscillation and global attractivity of discrete survival red blood cells model, Applicationes Mathematicae 30 (2003), 441-449.
[11] S. H. Saker, Oscillation and global attractivity in a periodic delay hematopoiesis model, J. Appl. Math. Computing 13, (2003), 287-300.
[12] S. H. Saker and S. Agarwal, Oscillation and global attractivity of a periodic survival red blood cells model, Journal Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications & Algorithms 12 (2005), no. 3-4, 429-440.
[13] E. M. Elabbasy, S. H. Saker, Dynamics of a class of non-autonomous systems of two non-interacting preys with common predator, J. Appl. Math. Computing 17 (2005) 195-215.
[14] S. H. Saker, Existence of positive periodic solutions of discrete model for the interaction of demand and supply, Nonlinear func. anal. Appl. 10 (2005), 311-324.
[15] S. H. Saker, Oscillation of continuous and discrete diffusive delay Nicholson’s Blowflies models, Appl. Math. Comp. (In press).
[16] E. M. Elabbasy and S. H. Saker, Periodic solutions and oscillation of discrete nonlinear delay population dynamics model with external force, IMA J. Appl. Math. (2005), 1-15.
[17] S. H. Saker and Y. G. Sun, Existence of positive periodic solutions of nonlinear discrete model exhibiting the Allee effect, Appl. Math. Comp. (Accepted).
[18] S. H. Saker and Y. G. Sun, Oscillatory and asymptotic behavior of positive periodic solutions of nonlinear discrete model exhibiting the Allee effect, Appl. Math. Comp. (Accepted).
[19] S. H. Saker, Oscillation and global attractivity of impulsive periodic delay respiratory dynamics model, Chinese Annals of Math. 26 B (2005), 511-522.
[20] E. M. Elabbasy, S. H. Saker and H. EL-Metwally, Oscillation and stability of nonlinear discrete models exhibiting the Allee effect, Mathematica Slovaka (accepted).
[21] E. M. Elabbasy H. N. Agiza, and S. H. Saker, Global Existence of Positive Periodic Solutions of Two-Dimensional Logistic Model for the Interaction of Demand and Supply, Mansoura Science Bulletin (accepted).
[22] S. H. Saker and Y. g. Sun, Positive Periodic Solution of Discrete Three-Level Food-Chain Model of Holling Type II, Appl. Math. Comp. (Accepted).
Dynamic Equations on Time Scales
[1] S. H. Saker, Oscillation of nonlinear dynamic equations on time scales, Appl. Math. Comp. 148 (2004), 81-91.
[2] L. Erbe, A. Peterson and S. H. Saker, Oscillation criteria for second-order nonlinear dynamic equations on time scales. J. London Math. Soc. 76 (2003), 701-714.
[3] M. Bohner and S. H. Saker, Oscillation of second order nonlinear dynamic equations on time scales, Rocky Mountain J. Math. 34, no. 4 (2004), 1239-1254.
[4] E. Akin-Bohner, M. Bohner and S. H. Saker, Oscillation for certain of class of second order Emden-Fowler dynamic equations, Electr. Transaction Numerical Anal. (to appear).
[5] M. Bohner and S. H. Saker, Oscillation criteria for perturbed nonlinear dynamic equations, Mathl. Comp. Modeling 40 (2004), 3-4, 249-260.
[6] R. Agarwal, M. Bohner and S. H. Saker, Oscillation criteria for second order delay dynamic equation, Canadian Applied Mathematics Quarterly, (accepted).
[7] S. H. Saker, Oscillation criteria of second-order half-linear dynamic equations on time scales, J. Comp. Appl. Math. 177 (2005), 375-387.
[8] S. H. Saker, Boundedness of solutions of second-order forced nonlinear dynamic equations, Rocky Mountain. J. Math. (Accepted).
[9] R. P. Agarwal, D. O'Regan and S. H. Saker, Oscillation criteria for second-order nonlinear neutral delay dynamic equations, Journal of Mathematical Analysis and Applications 300 (2004), 203-217.
[10] L. Erbe, A. Peterson and S. H. Saker, Asymptotic behavior of solutions of a third-order nonlinear dynamic equation on time scales, J. Comp. Appl. Math. 181, No. 1 (2005), 92-102 .
[11] S. H. Saker, Oscillation of second-order forced nonlinear dynamic equations on time scales, E. Journal of Qualitative Theory Differential Equations No. 23 (2005), 1-17.
[12] S. H. Saker, New oscillation criteria for second-order nonlinear dynamic equations on time scales, Nonlinear Fun. Anal. Appl. (NFAA), (accepted).
[13] S. H. Saker, Oscillation of second-order nonlinear neutral delay dynamic equations on time scales, J. Com. Appl. Math. 187 , (2006), 123-141.
[14] L. Erbe, A. Peterson and S. H. Saker, Kamenev-type oscillation criteria for second-order linear delay dynamic equations, Dynamic Syst. & Appl. 15 (2006), 65-78.
[15] S.H. Saker, Oscillation criteria for a certain class of second-order neutral delay dynamic equations, Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications & Algorithms (accepted).
[16] S. H. Saker, Oscillatory behavior of linear neutral delay dynamic equations on time scales, Kyungpook Math. Journal (accepted).
[17] R. P. Agarwal, D. O'Regan and S. H. Saker, Oscillation criteria for nonlinear perturbed dynamic equations of second-order on time scales, Journal of Applied Mathematics and Computing, (accepted).
[18] S. H. Saker, Oscillation of second-order neutral delay dynamic equations of Emden-Fowler type, Dynamic Sys. Appl. (accepted).
[19] L. Erbe, A. Peterson and S. H. Saker, Oscillation and asymptotic behavior of a third-order nonlinear dynamic equation, Cana. Appl. Math. Quart. (submitted)
Submitted
[1] R. P. Agarwal, D. O'Regan and S. H. Saker, Oscillation and global attractivity in a delay periodic host macroparasite model, Appl. Math. Comp. (submitted)
[2] R. P. Agarwal, D. O'Regan and S. H. Saker, Philos-type oscillation criteria of second-order half-linear dynamic equations on time scales, Rocky Mount. J. Math. , (submitted)
[3] R. P. Agarwal, D. O'Regan and S. H. Saker, Properties of bounded solutions of nonlinear dynamic equations on time scales, Canadian Appl. Math. Quart. (submitted).
