共 50 条
- [47] Positive solutions with changing sign energy to nonhomogeneous elliptic problem of fourth order RECENT DEVELOPMENTS IN NONLINEAR ANALYSIS, 2010, : 217 - 233
- [49] Positive solutions with changing sign energy to a nonhomogeneous elliptic problem of fourth order BOLETIM SOCIEDADE PARANAENSE DE MATEMATICA, 2011, 29 (01): : 25 - 39