Ronto MI, Samoilenko AM, Trofimchuk SI. The theory of the numerical-analytic method: Achievements and new trends of development. IV. Ukr. Mat. Zhurn. [Internet]. 1998Dec.25 [cited 2024Jul.27];50(12):1656–1672. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4785