@article{TRSPY_2002_239_a15,
     author = {R. V. Mikhailov},
     title = {Transfinite {Lower} {Central} {Series} of {Groups:} {Parafree} {Properties} and {Topological} {Applications}},
     journal = {Informatics and Automation},
     pages = {251--267},
     publisher = {mathdoc},
     volume = {239},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2002_239_a15/}
}