@article{700620,
     title = {Topological groups of divisibility},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {291-295},
     mrnumber = {MR0480252},
     zbl = {0372.22004},
     url = {http://dml.mathdoc.fr/item/700620}
}

Močkoř, J. Topological groups of divisibility, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. 291-295. http://gdmltest.u-ga.fr/item/700620/