2010
Boundedness of solutions for asymmetric Duffing equations.
[DOI]
Lufang Mi
,
Pingping Zhang
,
Huazhong Xu
Appl. Math. Comput., 2010

2009
Analytic solutions of a second order iterative functional differential equation.
[DOI]
Pingping Zhang
,
Lufang Mi
Appl. Math. Comput., 2009