@article{MT_2013_16_1_a3,
     author = {K. Zh. Kudaǐbergenov},
     title = {On dense free subgroups of the automorphism group},
     journal = {Matemati\v{c}eskie trudy},
     pages = {56--62},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2013_16_1_a3/}
}