Zhang, Xinguang, et al. “The Uniqueness and Iterative Properties of Solutions for a General Hadamard-Type Singular Fractional Turbulent Flow Model”. Nonlinear Analysis: Modelling and Control, vol. 27, no. 3, Jan. 2022, pp. 428-44, https://doi.org/10.15388/namc.2022.27.25473.