%0 Journal Article
%A Mattman, Thomas W
%T Graphs of 20 edges are 2–apex, hence unknotted
%J Algebraic and Geometric Topology
%D 2011
%P 691-718
%V 11
%N 2
%U http://geodesic.mathdoc.fr/articles/10.2140/agt.2011.11.691/
%R 10.2140/agt.2011.11.691
%F 10_2140_agt_2011_11_691