- Eric D'Hoker, D.H. Phong, “Two-loop superstrings II”, Nuclear Physics B, 636, № 1-2, 2002, 3
- E. Arbarello, C. De Concini, V. G. Kac, C. Procesi, “Moduli spaces of curves and representation theory”, Commun.Math. Phys., 117, № 1, 1988, 1
- Kimio Ueno, Hirofumi Yamada, Algebraic Analysis, 1988, 893
- George Siopsis, “The cosmological constant in Witten's superstring field theory”, Physics Letters B, 233, № 3-4, 1989, 301
- M. Marcolli, Encyclopedia of Mathematical Physics, 2006, 600
- R. Seeley, I.M. Singer, “Extending to singular Riemann surfaces”, Journal of Geometry and Physics, 5, № 1, 1988, 121
- B.V. Ivanov, “On the quantum topology of strings”, Physics Letters B, 189, № 1-2, 1987, 39
- Humberto Gomez, Carlos R. Mafra, “The overall coefficient of the two-loop superstring amplitude using pure spinors”, J. High Energ. Phys., 2010, № 5, 2010, 17
- M. KACHKACHI, O. DAFOUNANSOU, A. El RHALAMI, “THE CHIRALLY SPLIT DIFFEOMORPHISM ANOMALY AND THE μ-HOLOMORPHIC PROJECTIVE CONNECTION”, Mod. Phys. Lett. A, 15, № 06, 2000, 417
- Dirk-Jan Smit, “String theory and algebraic geometry of moduli spaces”, Commun.Math. Phys., 114, № 4, 1988, 645