@article{10_21136_CMJ_1990_102406,
     author = {Jakub{\'\i}k, J\'an},
     title = {Cyclically ordered groups with unique addition},
     journal = {Czechoslovak Mathematical Journal},
     pages = {534--538},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1990},
     doi = {10.21136/CMJ.1990.102406},
     mrnumber = {1065033},
     zbl = {0732.06011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1990.102406/}
}