\input zb-basic
\input zb-ioport
\iteman{io-port 50267426}
\itemau{Simonetto, Paolo; Archambault, Daniel; Auber, David; Bourqui, Romain}
\itemti{Impred: an improved force-directed algorithm that prevents nodes from crossing edges}
\itemso{Comput. Graph. Forum 30, No. 3, 1071-1080 (2011).}
\itemcc{}
\itemut{}
\itemli{doi:10.1111/j.1467-8659.2011.01956.x}
\end