@article{VSGU_2011_5_a6,
     author = {I. S. Ryabtsov},
     title = {Representation of {Parseval} frames in {Hilbert} spaces},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {60--70},
     publisher = {mathdoc},
     number = {5},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2011_5_a6/}
}