@article{AA_1997_9_6_a0,
     author = {D. Z. Arov},
     title = {On monotone families of $J$-contractive matrix functions},
     journal = {Algebra i analiz},
     pages = {3--37},
     year = {1997},
     volume = {9},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1997_9_6_a0/}
}