Paper on Weiss and Bertalanffy presented at the ISSS 2006 50th annual meeting Stefan Blachfellner vor 20 Jahren At the ISSS 2006 (50th Annual Meeting) a paper by Drack and Apfalter was presented: Is Paul Weiss‘ and Ludwig von Bertalanffy’s System Thinking still valid today? Related posts Humanism under attack by Stefan Blachfellner 10 Jahren ago David Rousseau connects with European, Middle-Eastern and African communitites at INCOSE EMEA Sector Systems Engineering Conference in Berlin, Germany by Stefan Blachfellner 8 Jahren ago Stefan Blachfellner invited to exclusive IASCYS meeting along side several key figures in systems research by Stefan Blachfellner 7 Jahren ago