TY  - JOUR 
T1  - The behavior of graphite and copper electrodes on the finish die-sinking electrical discharge machining (EDM) of AISI P20 tool steel
JO  - Journal of the Brazilian Society of Mechanical Sciences and Engineering
A1  - Amorim, Fred L.
A1  - Weingaertner, Walter L.
SN  - 1678-5878
UL  - 10.1590/S1678-58782007000400004
VL  - 29 
Y1  - 2007
PB  - Brasil 
ER  -