@article{10_21136_CMJ_1988_102257,
     author = {Opic, Bohum{\'\i}r and Gurka, Petr},
     title = {$A_r$-condition for two weight functions and compact imbeddings of weighted {Sobolev} spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {611--617},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1988},
     doi = {10.21136/CMJ.1988.102257},
     mrnumber = {962905},
     zbl = {0676.46029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102257/}
}