V.  Nair, Biju, A. T., Mohanan, K., and Eringathodi, S., ?Novel synthesis of highly functionalized pyrazolines and pyrazoles by triphenylphosphine mediated reaction of dialkyl azodicarboxylate with allenic esters?, Organic Letters, vol. 8, no. 11, pp. 2213?2216, 2006.

V.  Nair, Biju, A. T., Mathew, S. C., and Eringathodi, S., ?Novel reaction of the ?huisgen zwitterion? with chalcones and dienones: an efficient strategy for the synthesis of pyrazoline and pyrazolopyridazine derivatives?, Angewandte Chemie-International Edition, vol. 46, no. 12, pp. 2070?2073, 2007.