Bott, S., Marchand, A., Ramanaiah, K., Bott, S., Gilbert, J., & Kirschner, S. (1996). Generation and trapping of N-substituted-3-azetidinylidenecarbenes. Tetrahedron Letters, 37(45), pp. 8101-8104. doi:10.1016/0040-4039(96)01850-3

Bott, Simon, AP Marchand, KCV Ramanaiah, SG Bott, JC Gilbert, and S. Kirschner. "Generation and Trapping of N-substituted-3-azetidinylidenecarbenes." Tetrahedron Letters 37, no. 45 (1996): 8101-8104.

Bott, Simon, et al. "Generation and Trapping of N-substituted-3-azetidinylidenecarbenes." Tetrahedron Letters 37.45 (1996): 8101-8104.