Cavalcante, Thiago R., i Edcarlos D. Silva. „Fourth-Order Elliptic Problems Involving Concave-Superlinear Nonlinearities”. Topological Methods in Nonlinear Analysis 60, no. 2 (grudzień 11, 2022): 581–600. Udostępniono lipiec 22, 2024. https://apcz.umk.pl/TMNA/article/view/41351.