Elena Fersman Leonid Mokrushin Paul Pettersson Wang Yi Schedulability analysis of fixed-priority systems using timed automata. 301-317 2006 354 Theor. Comput. Sci. 2 http://dx.doi.org/10.1016/j.tcs.2005.11.019 db/journals/tcs/tcs354.html#FersmanMPY06