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@article{AA_1993_5_4_a3, author = {G. Sh. Guseinov}, title = {Spectral analysis of second-order multiparameter differential equations with periodic coefficients}, journal = {Algebra i analiz}, pages = {98--121}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1993_5_4_a3/} }
G. Sh. Guseinov. Spectral analysis of second-order multiparameter differential equations with periodic coefficients. Algebra i analiz, Tome 5 (1993) no. 4, pp. 98-121. http://geodesic.mathdoc.fr/item/AA_1993_5_4_a3/