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Denzler, Brenda (2001) (på engelska). The lure of the edge: scientific passions, religious beliefs, and the pursuit of UFOs. Berkeley, Calif.: University of California Press. Libris5008350. ISBN 0-520-22432-9
mja.com.au
Tertiary education institutions should not offer pseudoscientific medical courses (2012)
Alastair H MacLennan and Robert G B Morrison Med J Aust 2012; 196 (4): 225-226.