Takahiro Sasaki Yuji Ichikawa Tetsuo Hironaka Toshiaki Kitamura Toshio Kondo Evaluation of low-energy and high-performance processor using variable stages pipeline technique. 230-238 2008 2 IET Comput. Digit. Tech. 3 https://doi.org/10.1049/iet-cdt:20070130 db/journals/iet-cdt/iet-cdt2.html#SasakiIHKK08