STANKUS, Eugenijus; ŠINKŪNAS, Juozas. Certification of mathematics teachers and its perspective. Lietuvos matematikos rinkinys, [S. l.], v. 46, n. spec., p. 191–194, 2023. DOI: 10.15388/LMR.2006.30627. Disponível em: https://www.journals.vu.lt/LMR/article/view/30627.. Acesso em: 19 may. 2024.