BONDAR, L. A. Synthesis and physicochemical properties of silica gels with small additives of aluminium and zirconium ions. Поверхня, [S. l.], n. 7-8, p. 26–34, 2002. Disponível em: http://www.surfacezbir.com.ua/index.php/surface/article/view/80. Acesso em: 25 вер. 2026.