Reetz, Manfred T., Hanno Brümmer, Magnus Kessler, and Jörg Kuhnigk. “Preparation and Catalytic Activity of Boron-Substituted Zirconocenes”. CHIMIA 49, no. 12 (December 20, 1995): 501. Accessed May 4, 2024. https://www.chimia.ch/chimia/article/view/1995_501.