APYNIS, Antanas; MAZĖTIS, Edmundas. The problems of mathematics education at secondary schools and gymnasia. Lietuvos matematikos rinkinys, [S. l.], v. 52, n. proc. LMS, p. 67–71, 2011. DOI: 10.15388/LMR.2011.me03. Disponível em: https://www.journals.vu.lt/LMR/article/view/15376.. Acesso em: 29 apr. 2024.