ŠINKŪNAS , Juozas. Convex functions and inequalities in the secondary school. Lietuvos matematikos rinkinys, [S. l.], v. 48, n. proc. LMS, p. 142–148, 2008. DOI: 10.15388/LMR.2008.18081. Disponível em: https://journals.vu.lt./LMR/article/view/18081.. Acesso em: 21 nov. 2024.