TY  - JOUR 
T1  - Obtention of nanostructured silica glass by sol-gel process with incorporation of lead compounds
JO  - Materials Research
A1  - Santos, Ana Maria M.
A1  - Vasconcelos, Wander L.
SN  - 1516-1439
UL  - 10.1590/S1516-14391999000300015
VL  - 2 
Y1  - 1999
PB  - Brasil 
ER  -