Tian Xia Kaidi Feng Wai Yung Low Reflection High-Speed Simultaneous Bi-Directional Data Bus. 43-50 2007 16 Journal of Circuits, Systems, and Computers 1 http://dx.doi.org/10.1142/S0218126607003538 db/journals/jcsc/jcsc16.html#XiaFY07