[1]
B. Gunes and M. Cakir, “A fitted approximate method for solving singularly perturbed Volterra–Fredholm integro-differential equations with an integral boundary condition”, Ukr. Mat. Zhurn., vol. 76, no. 1, pp. 115–131, Feb. 2024, doi: 10.3842/umzh.v76i1.7331.