Demeijere, A., Wenck, H., Seyedmahdavi, F., Viehe, HG., Gallez, V., & Erden, I. (1986). Cycloadditions of Methylenecyclopropanes and Strained Bicyclo[n.1.0]alkanes To Radicophilic Olefins. Tetrahedron, 42(5), 1291-1297. https://doi.org/10.1016/S0040-4020(01)87348-8 (Original work published 1986)