@article{DAN_1963_149_6_a4,
     author = {M. A. Naimark},
     title = {Unitary permutation operators in the space $\Pi_\kappa$},
     journal = {Doklady Akademii Nauk},
     pages = {1261--1263},
     publisher = {mathdoc},
     volume = {149},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_6_a4/}
}