TY  - JOUR
AU  - Raitums, Uldis
TI  - Relaxation of quasilinear elliptic systems via A-quasiconvex envelopes
JO  - ESAIM: Control, Optimisation and Calculus of Variations
PY  - 2002
SP  - 309
EP  - 334
VL  - 7
PB  - EDP-Sciences
UR  - http://archive.numdam.org/articles/10.1051/cocv:2002014/
DO  - 10.1051/cocv:2002014
LA  - en
ID  - COCV_2002__7__309_0
ER  -