hamidz@iut.ac.ir Google Scholar Office Department of mathematical sciences, Room 6, 8415683111 Phone +983113913628 Fax +983113912602 Positions Professor of Department of mathematical sciences Research Interests Dynamical Systems Ordinary differential equations Bifurcation Theory Hilbert's 16th problem type: Journal Title DOI type Limit cycles near an eye-figure loop in some polynomial Lienard systems # Journal New Schemes for GPS-Denied Source Localization Using a Nonholonomic Unicycle # Journal Nonholonomic Source Localization in 3-D Environments Without Position Measurement # Journal Bifurcation of limit cycles in a class of Lienard systems with a cusp and nilpotent saddle # Journal Bifurcation of Limit Cycles in a Near-Hamiltonian System with a Cusp of Order Two and a Saddle 10.1142/S0218127416501807 Journal Classification of bounded travelling wave solutions of the generalized Zakharov equation # Journal Bifurcation of Limit cycles in Small Perturbation of a class of Lienard systems # Journal Reaction-Diffusion Patterns in Plant Tip Morphogenesis Bifurcations on Spherical Caps # Journal BIFURCATION OF LIMIT CYCLES IN SMALL PERTURBATIONS OF A HYPER-ELLIPTIC HAMILTONIAN SYSTEM WITH TWO NILPOTENT SADDLES # Journal Limit cycle bifurcation by perturbing a cuspidal loop of order 2 in Hamiltonian System # Journal