The k-layer Topological Via Minimization Problem on a Circular Channel. - Jai-Shen Huang; Yeh-Hao Chin (VLSI Design, 1992)

An Efficient Algorithm for the Split K-Layer Circular Topological Via Minimization Problem. - Jai-Shen Huang; Yeh-Hao Chin (VLSI Design, 1996)