TY  - BOOK
AU  - Li,Lin
AU  - Song,Shu-Zhi
TI  - Solutions of Nonlinear Differential Equations: Existence Results via the Variational Approach 
SN  - 9789813108608
PY  - 2016///
CY  - New Jersey
PB  - World Scientific
N1  - bibliogr
ER  -