TY  - JOUR 
T1  - Active-set strategy in Powell's method for optimization without derivatives
JO  - Computational & Applied Mathematics
A1  - Arouxét, Ma. Belén
A1  - Echebest, Nélida
A1  - Pilotta, Elvio A.
SN  - 1807-0302
UL  - 10.1590/S1807-03022011000100009
VL  - 30 
Y1  - 2011
PB  - Brasil 
ER  -