Characterizations of polynomial complexity classes with a better intensionality.

Jean-Yves Marion Romain Péchoux Characterizations of polynomial complexity classes with a better intensionality. 79-88 2008 PPDP http://doi.acm.org/10.1145/1389449.1389460 conf/ppdp/2008 db/conf/ppdp/ppdp2008.html#MarionP08