Repovš, Dušan, and Pavel V. Semenov. “A Selection Theorem for Mappings With Nonconvex Nondecomposable Values in $L_p$-Spaces”. Topological Methods in Nonlinear Analysis 8, no. 2 (December 1, 1996): 407–412. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.1996.042.