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O., Hahn; Strassmann, F. (18 November 1938). "Über die Entstehung von Radiumisotopen aus Uran durch Bestrahlen mit schnellen und verlangsamten Neutronen" [Concerning the Creation of Radium isotopes from Uranium by Irradiation with Fast and Slow Neutrons]. Naturwissenschaften (in German). 26 (46): 755–756. Bibcode:1938NW.....26..755H. doi:10.1007/BF01774197. ISSN0028-1042. S2CID20406901.
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