Xian, X. and Jingxian, S. (2011) “Unbounded connected component of the positive solutions set of some semi-positone problems”, Topological Methods in Nonlinear Analysis, 37(2), pp. 283–302. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.2011.015 (Accessed: 29 March 2024).