Baskaran, S and Vasu, J and Prasad, Ram and Kodukulla, K and Trivedi, Girish K and Chandrasekhar, J (1996) 1,3-Dipolar cycloaddition reaction of ?,?-unsaturated esters and lactones with diazomethane. In: Tetrahedron, 52 (12). 4515-4526 .