@article{IM2_1993_41_2_a4,
     author = {D. N. Zarnadze},
     title = {On some topological and geometrical properties of {Frechet--Hilbert} spaces},
     journal = {Izvestiya. Mathematics },
     pages = {273--288},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1993_41_2_a4/}
}