@article{VKAM_2013_1_a4,
     author = {A. P. Goryushkin},
     title = {On subgroups of almost amalgamated free product two groups with finite amalgamated subgroup},
     journal = {Vestnik KRAUNC. Fiziko-matemati\v{c}eskie nauki},
     pages = {43--55},
     year = {2013},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VKAM_2013_1_a4/}
}