Maksimov, V. P.     In constucting solution of functional differential system with a guaranteed precision / V. P. Maksimov, A. N. Rumyantsev, V. A. Shishkin // Functional Differential Equations. - 1995. - Т. 2, № 1-2. - С. 135-144 Доп.точки доступа: Rumyantsev, A. N.; Shishkin , V. A.