TY  - JOUR 
T1  - Elementary motor perseveration in early diagnosis of progressive supranuclear palsy
JO  - Arquivos de Neuro-Psiquiatria
A1  - Nitrini, Ricardo
SN  - 0004-282X
UL  - 10.1590/S0004-282X1987000100004
VL  - 45 
Y1  - 1987
PB  - Brasil 
ER  -