B. E. Hegemann, S. Jahanmir, S. M. Hsu, and R. G. Munro, “In-Situ Analysis of Chemical Reactions by Laser Raman Spectroscopy:  Technique Development,” Engineered Materials for Advanced Friction and Wear Applications, F. A. Smidt and P. J. Blau (Eds.), ASM International, Metals Park, OH (1988) 165-166.