Yuxin Deng Rob J. van Glabbeek Matthew Hennessy Carroll Morgan Characterising Testing Preorders for Finite Probabilistic Processes. 2008 4 Logical Methods in Computer Science 4 http://dx.doi.org/10.2168/LMCS-4(4:4)2008 db/journals/lmcs/lmcs4.html#DengGHM08