TY  - JOUR 
T1  - Cation size effects-modified phase and PTCR development in Er3+ and Ca2+ co-doped BaTiO3 ceramics during sintering
JO  - Materials Research
A1  - Silva, Ronaldo Santos da
A1  - M'Peko, Jean-Claude
A1  - Fontes, Lilian da Costa
A1  - Hernandes, Antonio Carlos
SN  - 1516-1439
UL  - 10.1590/S1516-14392009000300007
VL  - 12 
Y1  - 2009
PB  - Brasil 
ER  -