杨健夫, 朱熹平. ON THE EXISTENCE OF NONTRIVIAL SOLUTION OF A QUASILINEAR ELLIPTIC BOUNDARY VALUE PROBLEM FOR UNBOUNDED DOMAINS (2) Zero Mass Case[J]. 数学物理学报(英文版), 1987, 7(4): 447-459.
Yang Jianfu, Zhu Xiping. ON THE EXISTENCE OF NONTRIVIAL SOLUTION OF A QUASILINEAR ELLIPTIC BOUNDARY VALUE PROBLEM FOR UNBOUNDED DOMAINS (2) Zero Mass Case[J]. Acta mathematica scientia,Series B, 1987, 7(4): 447-459.