@article{CMUC_1972_13_4_a15,
     author = {Hu\v{s}ek, Miroslav},
     title = {Products as reflections},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {783--800},
     year = {1972},
     volume = {13},
     number = {4},
     mrnumber = {0320982},
     zbl = {0248.54026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1972_13_4_a15/}
}