VIRUIŠIS, Vaclovas. On purposefulners of the mathematics course presented at the education faculty. Lietuvos matematikos rinkinys, [S. l.], v. 39, n. III, p. 299–301 , 1999. DOI: 10.15388/LMD.1999.35638. Disponível em: https://www.zurnalai.vu.lt/LMR/article/view/35638. Acesso em: 7 nov. 2025.