…by Jason Cantarella, AI LaPointe and Eric J. Rawdon :
http://arxiv.org/PS_cache/arxiv/pdf/1110/1110.3262v1.pdf
I still hope that somebody will persuade those guys to modify their software program a little bit, so it will be able to compute open, 2-ends knots (stoppers), and open, 4-ends links (bends) as well…
(See also : http://igkt.net/sm/index.php?topic=1963 )