@article{10_4153_CJM_1966_090_5,
     author = {Fillmore, Peter A.},
     title = {On {Products} of {Symmetries}},
     journal = {Canadian journal of mathematics},
     pages = {897--900},
     year = {1966},
     volume = {18},
     number = {1},
     doi = {10.4153/CJM-1966-090-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-090-5/}
}