@article{MZM_1993_54_4_a12,
     author = {A. A. Zyablov},
     title = {On basis properties of eigenfunctions of one model problem with indefinite weight},
     journal = {Matemati\v{c}eskie zametki},
     pages = {149--151},
     publisher = {mathdoc},
     volume = {54},
     number = {4},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_4_a12/}
}