Chun Jason Xue Zili Shao Meilin Liu Mei Kang Qiu Edwin Hsing-Mean Sha Optimizing parallelism for nested loops with iterational and instructional retiming. 29-37 2009 3 J. Embedded Computing 1 http://dx.doi.org/10.3233/JEC-2009-0076 db/journals/jec/jec3.html#XueSLQS09