Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: issn exact "1050-2726" Add to list Miscellaneous On becoming a beyonder! Herman Van Den Broeck (UGent) and David Venter (2012) THE SYSTEM THINKER. 22(10). p.9-11