PALIOKAS, Eugenijus. Multidimensional analogs of A. Bicardze system. Lietuvos matematikos rinkinys, [S. l.], v. 41, n. spec., p. 221–226, 2001. DOI: 10.15388/LMR.2001.34473. Disponível em: https://www.journals.vu.lt/LMR/article/view/34473.. Acesso em: 11 may. 2024.