@article{VSGU_2012_6_a5,
     author = {I. S. Ryabtsov},
     title = {Necessary and sufficient conditions for prime {Parseval} frames},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {42--48},
     publisher = {mathdoc},
     number = {6},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2012_6_a5/}
}