Moussaoui, Abdelhamid, et al. “Fixed Point Theorems for Xi-Alpha-Eta-Gamma F-Fuzzy Contraction With an Application to Neutral Fractional Integro-Differential Equation With Nonlocal Conditions”. Nonlinear Analysis: Modelling and Control, vol. 29, no. 5, July 2024, pp. 939-57, https://doi.org/10.15388/namc.2024.29.36099.