A topic related to A Simple Reflection Group of Order 168—
Transvection groups over GF(2). See, for instance…
- Binary Coordinate Systems, by Steven H. Cullinane, 1984
- Classification of the Finite N-Generator Transvection Groups Over Z2, by Jizhu Nan and Jing Zhao, 2009, Advances in Applied Mathematics Vol. 44 Issue 3 (March 2010), 185–202
- Anne Shepler, video of a talk on Nov. 4, 2004, "Reflection Groups and Modular Invariant Theory"