@article{MZM_2001_69_2_a14,
     author = {Ya. G. Buchaev},
     title = {Basis {Property} of {Chains} of {Eigenfunctions} for {Certain} {Boundary-Value} {Problems}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {308--310},
     publisher = {mathdoc},
     volume = {69},
     number = {2},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_2_a14/}
}