Verfassungspolitische Lösungsansätze zur Überwindung der demographischen Alterung aus der Sicht des Wirtschaftssystems der Natur : Vortrag anlässlich der Jahrestagung 2004 der Deutschen Gesellschaft für Demographie vom 4. - 5. März 2004 an der Universität Bielefeld

Are economic goals and goals of environmental protection compatible? : explaining paths to a sustainable economy ; paper presented to International Conference on Policy Modeling EcoMod2004, University of Paris 1, Pantheon-Sorbonne, Paris/France, June 30 - July 2, 2004

Maier, Helmut, (2005)

Is there an economic system within nature? : results of a hedonic approach including a vision to explain and meet problems of human societies ; paper presented to International Conference of Policy Modeling EcoMod2004, University of Paris 1, Pantheon-Sorbonne, Paris/France, June 30 - July 2, 2004

Maier, Helmut, (2005)

On the economic order of the natural world : poster presented on occasion of the German Statistical Week, 24 - 27 September 2007 in Kiel/Germany

Maier, Helmut, (2007)