Self-Aligned Double and Quadruple Patterning Aware Grid Routing Methods. - Chikaaki Kodama; Hirotaka Ichikawa; Koichi Nakayama; Fumiharu Nakajima; Shigeki Nojima; Toshiya Kotani; Takeshi Ihara; Atsushi Takahashi 001 (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 2015)