[1]
“The Petrov–Galerkin Method Generalization for Solving a Second Kind Fredholm Integral Equations System”, Вест. ПГУ. Мат. Мех. Инф., no. 1 (60), pp. 5–14, Mar. 2023, doi: 10.17072/1993-0550-2023-1-5-14.