Shashidhar Thakur Yao-Wen Chang Martin D. F. Wong S. Muthukrishnan Algorithms for an FPGA switch module routing problem with application to global routing. 32-46 1997 16 IEEE Trans. on CAD of Integrated Circuits and Systems 1 http://doi.ieeecomputersociety.org/10.1109/43.559330 db/journals/tcad/tcad16.html#ThakurCWM97