M. Jünger, P. Mutzel:
"Automatic Graph Drawing: Exact Optimization Helps!";
in: "The Sharpest Cut: The Impact of Manfred Padberg and His Work", M. Grötschel (ed.); issued by: MPS-SIAM Series on Optimization; MPS-SIAM, 2004, ISBN: 0-89871-552-0, 327 - 351.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968660