Nowakowski A, Orpel A. Positive solutions for a nonconvex elliptic Dirichlet problem with superlinear response. TMNA [Internet]. 2006 Mar. 1 [cited 2024 Apr. 18];27(1):177-94. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.2006.007