@article{IVM_1983_9_a8,
     author = {M. F. Timan and K.Tukhliev},
     title = {Properties of certain orthonormal systems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {65--73},
     publisher = {mathdoc},
     number = {9},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_9_a8/}
}