@article{10_4153_CJM_1982_007_x,
     author = {Moody, R. V. and Yokonuma, T.},
     title = {Root {Systems} and {Cartan} {Matrices}},
     journal = {Canadian journal of mathematics},
     pages = {63--79},
     year = {1982},
     volume = {34},
     number = {1},
     doi = {10.4153/CJM-1982-007-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-007-x/}
}