@article{MMO_1960_9_a18,
     author = {N. D. Aizenshtat and I. A. Vainshtein and M. A. Kreines},
     title = {On non-rectangular interlacings},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {537--561},
     publisher = {mathdoc},
     volume = {9},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1960_9_a18/}
}