Hempel, John The lattice of branched covers over the figure-eight knot. (English) Zbl 0689.57002 Topology Appl. 34, No. 2, 183-201 (1990). Reviewer: J.A.Hillman MSC: 57M12 57N10 57M10 PDFBibTeX XMLCite \textit{J. Hempel}, Topology Appl. 34, No. 2, 183--201 (1990; Zbl 0689.57002) Full Text: DOI
Hempel, John Traces, lengths, and simplicity for loops on surfaces. (English) Zbl 0599.57011 Topology Appl. 18, 153-161 (1984). MSC: 57N05 57M05 30F10 57M10 PDFBibTeX XMLCite \textit{J. Hempel}, Topology Appl. 18, 153--161 (1984; Zbl 0599.57011) Full Text: DOI