@article{SM_1973_21_2_a2,
     author = {D. I. \`Eidel'kind},
     title = {On~Magnus groups},
     journal = {Sbornik. Mathematics},
     pages = {207--220},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1973_21_2_a2/}
}