TY  - JOUR 
T1  - Principal Component Analysis of Commercial Tannin Extracts Using Digital Images on Mobile Devices
JO  - Journal of the Brazilian Chemical Society
A1  - Grasel, Fábio S.
A1  - Ferrão, Marco F.
A1  - Helfer, Gilson A.
A1  - Costa, Adilson B.
SN  - 0103-5053
UL  - 10.5935/0103-5053.20160135
VL  - 27 
Y1  - 2016
PB  - Brasil 
ER  -