Principles Of Biochemistry, 6th Ed.
   by White A, Handler P, Smith EL, Hill RL, Lehman IR, 
   McGraw-Hill, (6th Ed. 1978)(7th Ed. 1983)
   [chapters re: pyridines and flavins]
The Pfizer Handbook Of Microbial Metabolites, 
   by Miller MW, 
   McGraw-Hill, (1961)
   [Chapter ??, pp ??? re: phenazines]
The Biochemistry Of Folic Acid And Related Pteridines, 
   by Blakley RL, 
   North-Holland Publishing Company / John Wiley & Sons, (1969)
Diamide: An Oxidant Probe For Thiols
   by Kosower NS, Kosomwer EM, 
   Methods In Enzymology, 251:123-139 (1995)