LAN, Kunquan, YANG, Xiaojing and YANG, Guangchong. Positive solutions of one-dimensional $p$-Laplacian equations and applications to population models of one species. Topological Methods in Nonlinear Analysis. Online. 1 September 2015. Vol. 46, no. 1, pp. 431 - 445. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2015.053.