Iannizzotto, Antonio. “Monotonicity of Eigenvalues of the Fractional $p$-Laplacian With Singular Weights”. Topological Methods in Nonlinear Analysis 61, no. 1 (February 26, 2023): 423–443. Accessed July 3, 2024. https://apcz.umk.pl/TMNA/article/view/42814.