P.  Mathur, Singh, V. K., Mobin, S. M., Srinivasu, C., Trivedi, R., Bhunia, A. K., and Puranik, V. G., ?Synthesis and characterization of ferrocenylchalcogenopropargyl complexes [Fe(eta(5)-(C5H4ECH2C)-C-I CH)(2)] (E-I = Se, S) and their reactions to form unusual ferrocenyl-containing metal clusters with eclipsed Cp rings and new five-membered (FeECH)-C-I =?, Organometallics, vol. 24, no. 3, pp. 367-372, 2005.