@article{10_4153_CJM_1986_019_9,
     author = {Chang, Bomshik},
     title = {Generators of {Chevalley} {Groups} over {Z}},
     journal = {Canadian journal of mathematics},
     pages = {387--396},
     year = {1986},
     volume = {38},
     number = {2},
     doi = {10.4153/CJM-1986-019-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-019-9/}
}