Defining 'Rituals' - Snoek, Joannes A. M. (Kreinath, Jens 1967- (edt), Snoek, Joannes A. M. 1946- (edt), Stausberg, Michael 1966- (edt), Theorizing rituals / volume 1 Issues, topics, approaches, concepts / edited by Jens Kreinath, Jan Snoek and Michael Stausberg, 2006)