KAVALIAUSKAS , Algis. Peculiarity of mathematical objects. Function. Lietuvos matematikos rinkinys, [S. l.], v. 48, n. proc. LMS, p. 105–108, 2008. DOI: 10.15388/LMR.2008.18. Disponível em: https://www.journals.vu.lt/LMR/article/view/18072.. Acesso em: 5 may. 2024.