@article{10_4153_CJM_1987_002_5,
     author = {Ferri, Massimo},
     title = {Colour {Switching} and {Homeomorphism} of {Manifolds}},
     journal = {Canadian journal of mathematics},
     pages = {8--32},
     year = {1987},
     volume = {39},
     number = {1},
     doi = {10.4153/CJM-1987-002-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-002-5/}
}