BEAVER: a computational-geometry-based tool for switchbox routing. - James P. Cohoon; Patrick L. Heck (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 1988)

Examining routing solutions. - S. Bapat; James P. Cohoon; Patrick L. Heck; A. Ju; L. J. Randall (Great Lakes Symposium on VLSI, 1992)