TY  - JOUR 
T1  - A simple method for the spectrophotometric determination of cephalosporins in pharmaceuticals using variamine blue
JO  - Eclética Química
A1  - Pasha, C.
A1  - Narayana, B.
SN  - 0100-4670
UL  - 10.1590/S0100-46702008000200006
VL  - 33 
Y1  - 2008
PB  - Brasil 
ER  -