@article{RM_1982_37_5_a3,
     author = {Ch. O. Annaberdyev},
     title = {A~boundary-value problem for which the eigenfunctions are multiply based},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {155--156},
     publisher = {mathdoc},
     volume = {37},
     number = {5},
     year = {1982},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1982_37_5_a3/}
}