TY  - JOUR
AU  - C. Xu
TI  - A priori error estimates and superconvergence of $P_0^2-P_1$ mixed finite element methods for elliptic boundary control problems
JO  - Sibirskij žurnal vyčislitelʹnoj matematiki
PY  - 2021
SP  - 63
EP  - 76
VL  - 24
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SJVM_2021_24_1_a5/
LA  - ru
ID  - SJVM_2021_24_1_a5
ER  -