1. Anderson L, Drukker N (2017) More large N limits of 3D gauge theories. J Phys A 50(34):345401. https://doi.org/10.1088/1751-8121/aa7e11, http://arxiv.org/abs/1701.04409
2. Baik H (2020) Almost all surfaces are made out of hexagons. Springer International Publishing, Cham, pp 1–6. https://doi.org/10.1007/978-3-319-70658-0_111-1
3. Calabi E (1957) On kähler manifolds with vanishing canonical class. In: Algebraic geometry and topology. Princeton University Press. https://doi.org/10.1515/9781400879915-006
4. Candelas P, Horowitz GT, Strominger A, Witten E (1985) Vacuum configurations for superstrings. Nucl Phys B 258:46–74. https://doi.org/10.1016/0550-3213(85)90602-9
5. Dehn M (1987) On curve systems on two-sided surfaces, with application to the mapping problem. Springer, New York, pp 234–252. https://doi.org/10.1007/978-1-4612-4668-8_14, translated from the German by John Stillwell