@article{MAT_1959_3_6_a2,
     author = {B. Sz\H{o}kefalvi-Nagy},
     title = {Sur les contractions de l'espace de {Hilbert}},
     journal = {Matematika},
     pages = {73--78},
     publisher = {mathdoc},
     volume = {3},
     number = {6},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1959_3_6_a2/}
}