Aluffi, Paolo Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.1007/JHEP02(2010)020 (Publisher version)
Aluffi, P., & Esole, M. (2010). New orientifold weak coupling limits in F-theory. Journal of High Energy Physics, 2010(2): 020. doi:10.1007/JHEP02(2010)020.