@article{FAA_1997_31_2_a6,
     author = {R. I. Bogdanov},
     title = {Factorization of {Diffeomorphisms} over {Phase} {Portraits} of {Vector} {Fields} on the {Plane}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {67--70},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1997_31_2_a6/}
}