@article{10_4153_CJM_1969_123_x,
     author = {Rhodes, F.},
     title = {Homotopy {Groups} of {Transformation} {Groups}},
     journal = {Canadian journal of mathematics},
     pages = {1123--1136},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-123-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-123-x/}
}