Grundlagen

Biozentrum der Universität Basel, Schweiz

CERN (Org. Européenne pour la Recherche Nucléaire), Genf, Schweiz

Closer to truth, The Kuhn Foundation, Irvine, USA

Human Overpopulation Atlas, Volume I, João L. R. Abegão, 2018, Porto, Portugal

Max-Planck-Institute, Deutschland

NASA (National Aeronautics Space Administration), Washington, USA

Optimum Population Trust, Manchester, UK

Seven Billion, National Geographic Magazine, Washington D.C., USA

7 Billion & Me, UNFRA (United Nations Population Fund), New York, USA