Carsten Fuhs Jürgen Giesl Martin Plücker Peter Schneider-Kamp Stephan Falke Proving Termination of Integer Term Rewriting. 32-47 2009 RTA http://dx.doi.org/10.1007/978-3-642-02348-4_3 conf/rta/2009 db/conf/rta/rta2009.html#FuhsGPSF09