2003/08/15 by Martin Scharlemann, Scharlemann, Martin
Mathematics · #57M25 #FOS: Mathematics #Geometric Topology (math.GT) #math.GT #msc:57M25
paper · pdf · doi:10.48550/arxiv.math/0308155
33pp. 12 fig. A mildly updated version for final pubication
arxiv created 2004/11/29 · arxiv updated 2009/12/01
This is a chapter that is to appear in the "Handbook of Knot Theory", edited by William W. Menasco and Morwen B. Thistlethwaite.