1. “The Wiley/NBS Registry of Mass Spectral Data,” ed. by F. W. McLafferty and D.B. Stauffer, John Wiley & Sons, New York, 1989; “The Important Peak Index of the Registry of Mass Spectral Data,” ed. by F. W. McLafferty and D. B. Stauffer, John Wiley & Sons, New York, 1991.