MEDNYKH, Alexander - NEDELA, Roman. Counting hypermaps by Egorychev’s method. In Analysis and Mathematical Physics. - Cham : Springer Nature Switzerland AG, 2016. ISSN 1664-2368, 2016, vol. 6, no. 3, pp. 301-314. Dostupné na: https://doi.org/10.1007/s13324-015-0119-z.