A Linear Perturbed Palais-Smale Condition for Lower Semicontinuous Functions on Banach Spaces

Li Xing CHENG, Xiao Yan LIU, Mai Fang ZUO

Acta Mathematica Sinica . 2008, (11): 1853 -1860 . DOI: 10.1007/s10114-008-7163-7