SANG, Yanbin. Critical Kirchhoff-Choquard system involving the fractional $p$-Laplacian operator and singular nonlinearities. Topological Methods in Nonlinear Analysis. Online. 12 September 2021. Vol. 58, no. 1, pp. 233 - 274. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2020.070.