Xiong, M., Yang, Z.-H., & Liu, X.-Q. (2016). Sign-changing solutions for $p$-Laplacian equations with jumping nonlinearity and the Fučik spectrum. Topological Methods in Nonlinear Analysis, 48(1), 159–181. Retrieved from https://apcz.umk.pl/TMNA/article/view/TMNA.2016.041