@article{10_21136_CMJ_1984_101980,
     author = {Tkachenko, Mikhail G.},
     title = {On topologies of free groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {541--551},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1984},
     doi = {10.21136/CMJ.1984.101980},
     mrnumber = {764436},
     zbl = {0584.22001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101980/}
}