Dunbar, D., Bjerrum-Bohr, N., Ita, H., Perkins, W., & Risager, K. (2006). The no-triangle hypothesis for Script N = 8 supergravity. Journal of High Energy Physics, 2006(12), pp. 43 pages-072. doi:10.1088/1126-6708/2006/12/072

Dunbar, David, N.E.J Bjerrum-Bohr, Harald Ita, Warren Perkins, and Kasper Risager. "The No-triangle Hypothesis for Script N = 8 Supergravity." Journal of High Energy Physics 2006, no. 12 (2006): 43 pages-072.

Dunbar, David, et al. "The No-triangle Hypothesis for Script N = 8 Supergravity." Journal of High Energy Physics 2006.12 (2006): 43 pages-072.