@article{article2b6c78fd, title = {Ultrastructural evolution during gelation of 'TI''O IND.2'-'SI''O IND.2' sols}, author = {Ramirez Del Solar, M and Esquivias, L and Craievich, Aldo Felix and Zarzycki, J}, year = {1992}, journal = {Journal of Non-Crystalline Solids} }