PALÁNCZ, Béla; POPPER, György. Mixed algorithm for solving boundary value problem. Computer Assisted Methods in Engineering and Science, [S. l.], v. 6, n. 3-4, p. 479–486, 1999. Disponível em: http://cames.ippt.gov.pl/index.php/cames/article/view/1309. Acesso em: 8 may. 2026.