@article{LJM_2002_11_a5,
     author = {E. V. Sokolov},
     title = {On the cyclic subgroup separability of free products of two groups with amalgamated subgroup},
     journal = {Lobachevskii journal of mathematics},
     pages = {27--38},
     publisher = {mathdoc},
     volume = {11},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2002_11_a5/}
}