TY  - JOUR
AU  - Tůma, Miroslav
TI  - A note on direct methods for approximations of sparse Hessian matrices
JO  - Applications of Mathematics
PY  - 1988
SP  - 171
EP  - 176
VL  - 33
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/AM.1988.104300/
DO  - 10.21136/AM.1988.104300
LA  - en
ID  - 10_21136_AM_1988_104300
ER  -