@article{ZNSL_2002_290_a2,
     author = {G. M. Gubreev and M. G. Volkova},
     title = {Hilbert space unconditional bases formed by values of an entire vector-function of order~1/2},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {33--41},
     publisher = {mathdoc},
     volume = {290},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_290_a2/}
}