Foerster H. von, Mora P. M. & Amiot L. W. (1960) Doomsday: Friday, November 13, AD 2026. Science 132: 1291–1295. Fulltext at http://cepa.info/1596
(1960)
Doomsday: Friday, November 13, AD 2026.
Science 132: 1291–1295.
Fulltext at http://cepa.info/1596