@article{10_4153_CJM_1999_060_6,
     author = {Johnson, Norman W. and Weiss, Asia Ivi\'c},
     title = {Quadratic {Integers} and {Coxeter} {Groups}},
     journal = {Canadian journal of mathematics},
     pages = {1307--1336},
     year = {1999},
     volume = {51},
     number = {6},
     doi = {10.4153/CJM-1999-060-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-060-6/}
}