TY  - JOUR 
T1  - The change in the motions of the Earth and spacecraft launching: a college physics level analysis
JO  - Revista Brasileira de Ensino de Física
A1  - Zhang, Gengmin
SN  - 1806-1117
UL  - 10.1590/S1806-11172013000300015
VL  - 35 
Y1  - 2013
PB  - Brasil 
ER  -