[1] Avantaggiati A.: On compact embedding theorems in weighted Sobolev spaces. Czechoslovak Math. J., 29 (104) (1979), no. 4, 635-648, MR 81b : 46040. MR 0548224 | Zbl 0432.46030

[2] Gurka P., Kufner A.: A note on a two-weighted Sobolev inequality. Banach Center Publications, 27th semester, Approx. Theory and Function Spaces, February- May 1986 (to appear).

[3] Korenev U. K.: A remark on the conditions for complete continuity of an imbedding operator. (Russian); Vestnik Leningrad. Univ. Mat. Mekh. Astronom. 1982, vyp. 1, 118-123, MR 83f : 46035. MR 0652070

[4] Kufner A., John O., Fučík S.: Function spaces. Academia Praha 1977. MR 0482102

[5] Lizorkin P. J., Otelbaev M.: Imbedding and compactness theorems for Sobolev type spaces with weights I, II. (Russian); Mat. Sb. (N.S.) 108 (150), (1979), no. 3, 358-377, MR 80j : : 46054; 112 (154) (1980), no. 1 (5), 56-85, MR 82i : 46051. MR 0530316

[6] Maz'ja V. G.: Sobolev spaces. (Russian), Izdatelstvo Leningradskogo Universiteta, Leningrad 1985. Zbl 0692.46023

[7] Opic В.: Compact imbedding of weighted Sobolev space defined on an unbounded domain I, II. Časopis Pěst. Mat. 113 (1988), 60-73; 113 (1988), 293-308. MR 0930807

[8] Opic В.: Necessary and sufficient conditions for compactness of an imbedding in weighted Sobolev spaces. Časopis Pěst. Mat. (to appear).