TY - JOUR AU - Chen, Chao-Nien AU - Tzeng, Shyuh-yaur TI - Some properties of Palais-Smale sequences with applications to elliptic boundary-value problems JO - Electronic Journal of Differential Equations PY - 1999 VL - 1999 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a59/ LA - en ID - EJDE_1999__1999__a59 ER -