Original: Schrock, R. R. "Chemistry of Bimetallic Linked Cyclopentadienyl Complexes: Progress Report, 1 December 1986 - 30 November 1989", Department of Chemistry at the Massachusetts Institute of Technology (MIT), United States Department of Energy, (1989).
Simplified: Progress Report, December 1, 1989 - November 30, 1992 ", Department of Chemistry at the Massachusetts Institute of Technology (MIT), United States Department of Energy, (1992).