B. Cross, P. J. Williams and R. E. Woodall
The preparation of phenazines by the cyclisation of 2-nitrodiphenylamines
Journal of the Chemical Society C: Organic, 1971, 2085 - 2090
Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say that stupidity is far more abundant than hydrogen, and THAT is the basic building block of the universe.
-- Frank Zappa