@article{PORMA_1969__28_2_115083,
     author = {Bennet, Mary Katherine},
     title = {A characterization of a category of discrete transformation groups},
     journal = {Portugaliae mathematica},
     pages = {71--73},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1969},
     mrnumber = {0281773},
     zbl = {0214.03104},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1969__28_2_115083/}
}