Zarrow, Robert A counting function for orientation reversing maps. (English) Zbl 0442.30047 Ill. J. Math. 24, 469-476 (1980). MSC: 30F99 20F34 PDFBibTeX XMLCite \textit{R. Zarrow}, Ill. J. Math. 24, 469--476 (1980; Zbl 0442.30047)
Abu Osman, M. T.; Rosenberger, G. Embedding property of surface groups. (English) Zbl 0441.30056 Bull. Malays. Math. Soc., II. Ser. 3, 21-27 (1980). MSC: 30F35 20E07 20F65 20H10 PDFBibTeX XMLCite \textit{M. T. Abu Osman} and \textit{G. Rosenberger}, Bull. Malays. Math. Soc., II. Ser. 3, 21--27 (1980; Zbl 0441.30056)