TY - JOUR AU - Opic, Bohumír AU - Gurka, Petr TI - $A_r$-condition for two weight functions and compact imbeddings of weighted Sobolev spaces JO - Czechoslovak Mathematical Journal PY - 1988 SP - 611 EP - 617 VL - 38 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102257/ DO - 10.21136/CMJ.1988.102257 LA - en ID - 10_21136_CMJ_1988_102257 ER -