Marlon Dumas Alexander Großkopf Thomas Hettel Moe Thandar Wynn Semantics of Standard Process Models with OR-Joins. 41-58 2007 conf/otm/2007-1 OTM Conferences (1) http://dx.doi.org/10.1007/978-3-540-76848-7_5 db/conf/otm/otm2007-1.html#DumasGHW07