TopolovĨan, N.; Panov, I.; Kotora, M. Reaction of Bicyclic Zirconacyclopentenes with Aldehydes and a Potential Pathway to Condensed 5-7-6(Ar) Ring Systems: Reaction of Bicyclic Zirconacyclopentenes with Aldehydes. European Journal of Organic Chemistry 2015, 2015 (13), 2868-2878 DOI: 10.1002/ejoc.201500248.