Why not use a search engine such as Pubmed, and find the articles that cite the one from 1999? Or you could just do a search using Dr. Kliman's name (she has coauthored additional papers on the subject since then). She is a very highly respected enzymologist, and her use of kinetic isotope effects is worth one's time to understand. Your reply struck me as odd in more than one way: If the mechanism were entirely settled, then there would be no reason to write any more papers on it. The fact that the mechanism is still under study makes it a better subject for a graduate presentation than if there were no questions remaining IMO. For some background on flavoprotein oxidases, Frey and Hegeman's textbook on enzymology has about 12 pages. It might also be helpful to consider that oxygen is a triplet when one writes a mechanism.