1. Doomsday: Friday 13 November, A.D. 2026;von Foerster;Science,1960
2. Population growth and Earth's carrying capacity;Cohen;Science,1995
3. World population growth and the latest technological problems;Austin;Technol. Forecast. Soc. Chang.,1971
4. Crisis around 2005A.D.? A technology-population interaction model;Taagepera;Gen. Syst.,1976
5. Population growth and technological change: one million B.C. to 1990;Kremer;Q. J. Econ.,1993