@article{FPM_2004_10_3_a9,
     author = {A. V. Syrtsov},
     title = {Relatively free products of {Magnus} groups},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {199--213},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2004_10_3_a9/}
}