TY  - JOUR 
T1  - Si3N4 ceramics sintered with Y2O3/SiO2 and R2O3(ss)/SiO2: a comparative study of the processing and properties
JO  - Materials Research
A1  - Ribeiro, Sebastião
A1  - Strecker, Kurt
SN  - 1516-1439
UL  - 10.1590/S1516-14392004000300003
VL  - 7 
Y1  - 2004
PB  - Brasil 
ER  -