Bayon, R.; Lygeros, N. Advanced results in enumeration of hyperstructures. (English) Zbl 1187.20069 J. Algebra 320, No. 2, 821-835 (2008). MSC: 20N20 16Y99 PDFBibTeX XMLCite \textit{R. Bayon} and \textit{N. Lygeros}, J. Algebra 320, No. 2, 821--835 (2008; Zbl 1187.20069) Full Text: DOI
Fourès, L. Recouvrements de surfaces de Riemann. (French) Zbl 0047.07303 Ann. Sci. Éc. Norm. Supér., III. Sér. 69, 183-201 (1952). Reviewer: G. af Hällström MSC: 30F99 PDFBibTeX XMLCite \textit{L. Fourès}, Ann. Sci. Éc. Norm. Supér. (3) 69, 183--201 (1952; Zbl 0047.07303) Full Text: DOI Numdam EuDML