A simple E8 construction
  In this short letter we conclude our program, started in [J. Math. Phys. 46 (2005) 083512], of building up explicit generalized Euler angle parameterizations for all exceptional compact Lie groups. In this last step we solve the problem for E8. 
S. L. Cacciatori, F. Dalla Piazza, and A. Scotti
math-ph hep-th math.MP