3 Yang, Xiao Vachharajani, Manish Lee, Ruby B. 2000 Fast Subword Permutation Instructions Based on Butterfly Networks Proceedings of Media Processors IS&T/SPIE Symposium on Electric Imaging: Science and Technology San Jose, California 80-86 Jan. 2000 http://palms.ee.princeton.edu/PALMSopen/yang00fast.pdf