TY  - JOUR 
T1  - Bernhard Gross and the evolution of  modern electret research
JO  - Brazilian Journal of Physics
A1  - Sessler, G. M.
SN  - 0103-9733
UL  - 10.1590/S0103-97331999000200003
VL  - 29 
Y1  - 1999
PB  - Brasil 
ER  -