NP-Hard Module Rotation Problems. - Keumog Ahn; Sartaj Sahni (IEEE Trans. Computers, 1993)

Constrained via minimization. - Keumog Ahn; Sartaj Sahni (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 1993)

Flipping Modules to Improve Circuit Performance and Routability. - Keumog Ahn; Sartaj Sahni (VLSI Design, 1994)