@article{IVM_2015_10_a2,
     author = {E. A. Tumanova},
     title = {On the root-class residuality of generalized free products with a~normal amalgamation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {27--44},
     publisher = {mathdoc},
     number = {10},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2015_10_a2/}
}