Bott, S., HEY, E., LAPPERT, M., ATWOOD, J., & BOTT, S. (1988). Insertion of diphenyldiazomethane into [ZrCp2(Cl)PR2] (Cp = η-C5H5, R = Sime3); X-ray structures of [ZrCp2(PR2)X] (X = Cl OR Me) and [PR2}]. Polyhedron, 7(19-20), pp. 2083-2086. doi:10.1016/S0277-5387(00)80725-1

Bott, Simon, E. HEY, MF LAPPERT, JL ATWOOD, and SG BOTT. "Insertion of Diphenyldiazomethane Into [ZrCp2(Cl)PR2] (Cp = η-C5H5, R = Sime3); X-ray Structures of [ZrCp2(PR2)X] (X = Cl OR Me) and [PR2}]." Polyhedron 7, no. 19-20 (1988): 2083-2086.

Bott, Simon, et al. "Insertion of Diphenyldiazomethane Into [ZrCp2(Cl)PR2] (Cp = η-C5H5, R = Sime3); X-ray Structures of [ZrCp2(PR2)X] (X = Cl OR Me) and [PR2}]." Polyhedron 7.19-20 (1988): 2083-2086.