KRYLOVAS, Aleksandras. On approximation of averaging operator. Lietuvos matematikos rinkinys, [S. l.], v. 48, n. proc. LMS, p. 66–71, 2008. DOI: 10.15388/LMR.2008.11. Disponível em: https://www.journals.vu.lt/LMR/article/view/18063.. Acesso em: 28 apr. 2024.