@article{SF_1974__9_134068,
     author = {E.Ja. Gabovic},
     title = {On orderability of some classes of groupoids.},
     journal = {Semigroup forum},
     pages = {139--154},
     publisher = {mathdoc},
     volume = {9},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SF_1974__9_134068/}
}