1. Science and Civilization in China;J Needham,1962
2. The Earth's magnetic field: Its history, origin and planetary perspective;RT Merrill;International geophysics series,1983
3. Tracking of Arctic terns Sterna paradisaea reveals longest animal migration;C Egevang;Proc Natl Acad Sci U S A,2010
4. Magnetismus und richtungsfinden zugunruhiger rotkehlchen (Erithacus rubecula);W. Merkel FWW;Vogelwarte,1965
5. Magnetotactic bacteria;R Blakemore;Science,1975