1. River routing: Methodology and analysis;Pinter,1983
2. MulCh: A multi-layer channel router using one, two, and three layer partitions;Greenberg,1988
3. Optimal placement for river routing;Leiserson;SIAM Journal on Computing,1983
4. River routing in VLSI;Mirzaian;Journal of Computer and System Sciences,1987
5. Feasible offset and optimal offset for general single-layer channel routing;Greenberg;SIAM Journal on Discrete Mathematics,1995