IANNIZZOTTO, Antonio. Monotonicity of eigenvalues of the fractional $p$-Laplacian with singular weights. Topological Methods in Nonlinear Analysis. Online. 26 February 2023. Vol. 61, no. 1, pp. 423 - 443. [Accessed 3 July 2024]. DOI 10.12775/TMNA.2022.024.