@article{VMUMM_2013_1_a4,
     author = {D. A. Permyakov},
     title = {Abelian subgroups generated by {Dehn} twists in homeomorphism group},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--32},
     publisher = {mathdoc},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2013_1_a4/}
}