TY  - JOUR
AU  - R. Zieliński
TI  - A simplex design for gradient estimation in quadratic regression
JO  - Applicationes Mathematicae
PY  - 1972
SP  - 493
EP  - 496
VL  - 13
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/am-13-4-493-496/
DO  - 10.4064/am-13-4-493-496
LA  - en
ID  - 10_4064_am_13_4_493_496
ER  -