TY  - JOUR
AU  - Volpert, Vitaly
AU  - Volpert, Aizik
TI  - Normal solvability of linear elliptic problems
JO  - Comptes Rendus. Mathématique
PY  - 2002
SP  - 457
EP  - 462
VL  - 334
IS  - 6
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/S1631-073X(02)02286-0/
DO  - 10.1016/S1631-073X(02)02286-0
LA  - en
ID  - CRMATH_2002__334_6_457_0
ER  -