@article{PIM_1985_N_S_38_52_a11,
     author = {Sava Krsti\'c},
     title = {Embedding {Semigroups} in {Groups:} a {Geometrical} {Approach}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {69 },
     year = {1985},
     volume = {_N_S_38},
     number = {52},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a11/}
}