@article{GDZPPN002419386,
title = {On the Schur Multipliers of Steinberg and Chevalley Groups over Commutative Rings.},
journal = {Mathematische Zeitschrift},
volume = {154},
year = {1977},
pages = {83-94},
zbl = {0339.18007},
url = {http://dml.mathdoc.fr/item/GDZPPN002419386}
}
Kallen, Wilberd van der; Stein, M.R. On the Schur Multipliers of Steinberg and Chevalley Groups over Commutative Rings.. Mathematische Zeitschrift, Tome 154 (1977) pp. 83-94. http://gdmltest.u-ga.fr/item/GDZPPN002419386/