フェルディナント・ライヒ
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Weeks, Mary Elvira (1932). “The Discovery of the Elements: XIII. Some Spectroscopic Studies”. Journal of Chemical Education 9 (8): 1413–1434. Bibcode: 1932JChEd...9.1413W. doi:10.1021/ed009p1413. http://search.jce.divched.org/JCEIndex/FMPro?-db=jceindex.fp5&-lay=wwwform&combo=weeks&-find=&-format=detail.html&-skip=27&-max=1&-token.2=27&-token.3=10. - subscription required