Reference Label	Details
Peerboom 1990	R. A. L. Peerboom, S. Ingemann, N. M. M. Nibbering, and J. F. Liebman, J. Chem. Soc. Perkin Trans. II 1825 (1990)
Ellis 1985	H. B. Ellis and G. B. Ellison, unpublished (1985),; quoted by Kass 1985