@article{10_4153_CMB_1973_039_2,
     author = {Kaul, S. K.},
     title = {On the {Irregular} {Sets} of a {Transformation} {Group}},
     journal = {Canadian mathematical bulletin},
     pages = {225--232},
     year = {1973},
     volume = {16},
     number = {2},
     doi = {10.4153/CMB-1973-039-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-039-2/}
}