KAŠUBA, Romualdas. More simple solution of not so simple problems – how does it happen?. Lietuvos matematikos rinkinys, [S. l.], v. 46, n. spec., p. 153–157, 2023. DOI: 10.15388/LMR.2006.30604. Disponível em: https://journals.vu.lt./LMR/article/view/30604. Acesso em: 19 apr. 2025.