TY  - JOUR
AU  - Yu. V. Vassilevski
AU  - K. N. Lipnikov
TI  - Optimal triangulations: existence, approximations, and double differentiation of $P_1$ finite element functions
JO  - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
PY  - 2003
SP  - 866
EP  - 874
VL  - 43
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZVMMF_2003_43_6_a8/
LA  - ru
ID  - ZVMMF_2003_43_6_a8
ER  -