@article{RM_1975_30_6_a8,
     author = {T. V. Volkova},
     title = {Maximal commutative regular subalgebras in a~factor of type {II}$_1$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1975},
     volume = {30},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1975_30_6_a8/}
}