@article{TRSPY_1987_180_a57,
     author = {E. P. Dolzhenko and V. I. Danchenko},
     title = {Mapping sets of locally finite length by a~rational function},
     journal = {Informatics and Automation},
     pages = {105--107},
     publisher = {mathdoc},
     volume = {180},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a57/}
}