@article{MZM_2005_77_2_a11,
     author = {B. S. Kashin and T. Yu. Kulikova},
     title = {On the validity for frames of a result concerning orthogonal systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {311--312},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2005_77_2_a11/}
}