Chengjun Guo

Existence of multiple periodic solutions for a class of second-order delay differential equations

Chengjun Guo, Zhiming Guo · Nonlinear Analysis Real World Applications · 2008 · 40 citations

Oscillation Theory, Multiple Periodic Solutions, Periodic Travelling Wave

Homoclinic orbits for a singular second-order neutral differential equation

Chengjun Guo, Donal O’Regan, Yuantong Xu et al. · Journal of Mathematical Analysis and Applications · 2010 · 27 citations

Oscillation Theory, Geometric Singular Perturbation Theory, Bifurcation Theory +1

Existence and multiplicity of homoclinic orbits of a second-order differential difference equation via variational methods

Chengjun Guo, Donal O’Regan, Yufeng Xu et al. · 2012 · 27 citations

Periodic Solutions, Variational Methods, Oscillation Theory +7

Existence of multiple periodic solutions for a class of first-order neutral differential equations

Chengjun Guo, Donal O’Regan, Ravi P. Agarwal · Applicable Analysis and Discrete Mathematics · 2010 · 26 citations · Full text

Periodic Solutions, Many Periodic Solutions, Oscillation Theory +3

Existence of periodic solutions for a class of second order differential equation with deviating argument

Chengjun Guo, Yuantong Xu · Journal of Applied Mathematics and Computing · 2008 · 26 citations

Periodic Solutions, Elliptic Equation, Oscillation Theory +2