@article{GMJ_1997__4_5_47927,
     author = {Janashia, G. and Lagvilava, E.},
     title = {On factorization and partial indices of unitary matrix-functions of one class.},
     journal = {Georgian Mathematical Journal},
     pages = {439--442},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {1997},
     zbl = {0893.47011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1997__4_5_47927/}
}