@article{TRSPY_1992_193_a38,
     author = {A. L. Fel'shtyn},
     title = {Zeta-functions of {Reidemeister} and {Nielsen}},
     journal = {Informatics and Automation},
     pages = {203--208},
     publisher = {mathdoc},
     volume = {193},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1992_193_a38/}
}