LONG, Nguyen Viet; XUAN THAO, Du Thi; CHIEN, Nguyen Duc; BINH, Pham Thanh. Structure and physico-chemical properties of silica gels doped with optically activated Er3+ ions by sol-gel process. <b>Vietnam Journal of Chemistry</b>, <i>[S. l.]</i>, v. 45, n. 1, p. 114, 2014. DOI: 10.15625/4721. Disponível em: https://vjs.ac.vn/vjchem/article/view/4721. Acesso em: 6 dec. 2025.