Parametrized braid groups of Chevalley groups. Loday, Jean-Louis; Stein, Michael R. — 2005 Documenta Mathematica
The Schur Multipliers of Sp6(Z),Spin8(Z),Spin7(Z),andF4(Z). Michael R. Stein — 1975 Mathematische Annalen
Lower Bounds for the Order of K2(ZG) and Wh2(G). Michael R. Stein; R.Keith Dennis; Michael E. Keating — 1976 Mathematische Annalen