RUTKAUSKAS, Stasys; SABUROV, Igor. On the weighted boundary value problem for systems of degenerate ordinary differential equations. Lietuvos matematikos rinkinys, [S. l.], v. 51, n. proc. LMS, p. 57–62, 2010. DOI: 10.15388/LMR.2010.10. Disponível em: https://www.zurnalai.vu.lt/LMR/article/view/17773. Acesso em: 6 nov. 2025.