@article{RM_1984_39_2_a27,
     author = {P. V. Nikolenko},
     title = {On~the homotopy groups of certain spaces of matrix-valued functions and on the stability of the system of partial indices of a~family of matrix-valued functions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {185--186},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1984_39_2_a27/}
}