1. The symplectic representation of map automorphisms;Biggs;Bull. Lond. Math. Soc.,1972
2. M.D.E. Conder, Reflexible orientable regular maps on surfaces of genus 2 to 301, online. August 2012. URL: http://www.math.auckland.ac.nz/~conder/OrientableRegularMaps301.txt.
3. Generators and Relations for Discrete Groups;Coxeter,1958
4. Voltage graphs;Gross;Discrete Math.,1974
5. Group extensions and coverings of maps;Hu,2013