On regularization of a linear Noether boundary-value problem using a degenerate impulsive effect. Neliniini Kolyvannya, [S. l.], v. 16, n. 1, p. 133–145, 2013. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/687. Acesso em: 21 jan. 2026.