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Ludvigsen, Rolf; Brian Chatterton (2002). "Franco Rasetti (1901 - 2001)". Trilobite Papers 14. Denman Institute Research on Trilobites. Archived from the original on 2016-03-18. Retrieved 2016-03-15.
Ludvigsen, Rolf; Brian Chatterton (2002). "Franco Rasetti (1901 - 2001)". Trilobite Papers 14. Denman Institute Research on Trilobites. Archived from the original on 2016-03-18. Retrieved 2016-03-15.