@article{articleb51eb53b,
title   = {Functionalized silica synthesized by sol-gel process},
author = {Nassar, Eduardo José and Neri, Cláudio R. and Calefi, Paulo S. and Serra, Osvaldo Antonio},
year = {1999},
doi = {10.1016/s0022-3093(99)00046-0},
journal   = {Journal of Non-Crystalline Solides}
}