2004/11/15 by Lee Rudolph · 1 citation
Mathematics · #math.GT #msc:57M25
paper · pdf · doi:10.1016/0040-9383(92)90017-c
published as Topology, vol. 31, no. 2, pp. 231-237, 1992 · 8 pages, 5 figures
arxiv created 2004/11/15 · arxiv updated 2009/12/01
This article was originally published in Topology 31 (1992). The present hyperTeXed redaction corrects a few typographical errors and updates the references.