@article{10_1017_S0017089500030731,
     author = {Humphries, Stephen P.},
     title = {On reducible braids and composite braids},
     journal = {Glasgow mathematical journal},
     pages = {197--199},
     year = {1994},
     volume = {36},
     number = {2},
     doi = {10.1017/S0017089500030731},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500030731/}
}