Gaberdiel, Matthias R.; Hohenegger, Stefan; Volpato, Roberto (2012). "Symmetries of K3 sigma models". Communications in Number Theory and Physics. 6 (1): 1–50. arXiv:1106.4315. doi:10.4310/CNTP.2012.v6.n1.a1.
doi.org
Gaberdiel, Matthias R.; Hohenegger, Stefan; Volpato, Roberto (2012). "Symmetries of K3 sigma models". Communications in Number Theory and Physics. 6 (1): 1–50. arXiv:1106.4315. doi:10.4310/CNTP.2012.v6.n1.a1.