@article{DAN_1980_253_5_a2,
     author = {G. Sh. Guseinov},
     title = {Eigenfunctions of multiparameter differential and difference equations with periodic coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1040--1044},
     publisher = {mathdoc},
     volume = {253},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_5_a2/}
}