Martin Kutrib Hartmut Messerschmidt Friedrich Otto On Stateless Deterministic Restarting Automata. 353-364 2009 SOFSEM http://dx.doi.org/10.1007/978-3-540-95891-8_33 conf/sofsem/2009 db/conf/sofsem/sofsem2009.html#KutribMO09