Vikraman Arvind Partha Mukhopadhyay Srikanth Srinivasan New results on Noncommutative and Commutative Polynomial Identity Testing. 2008 15 Electronic Colloquium on Computational Complexity (ECCC) http://eccc.hpi-web.de/eccc-reports/2008/TR08-025/index.html 025 db/journals/eccc/eccc15.html#ArvindMS08