Xu, J., Wei, Z. and Ding, Y. (2012) “Positive solutions for a $2n$th-order $p$-Laplacian boundary value problem involving all even derivatives”, Topological Methods in Nonlinear Analysis, 39(1), pp. 23–36. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.2012.002 (Accessed: 25 April 2024).