Frank K. Hwang Y. C. Yao B. DasGupta Some permutation routing algorithms for low-dimensional hypercubes. 111-124 2002 270 Theor. Comput. Sci. 1-2 db/journals/tcs/tcs270.html#HwangYD02 http://dx.doi.org/10.1016/S0304-3975(00)00279-6