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Identification of sex hormones in the ovarian extracts of Torpedo marmorata and Bufo vulgaris. General and Comparative Endocrinology, 3(2), 149–152
DOI: 10.1016/0016-6480(63)90034-0
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Identification of oestradiol-17 beta, testosterone and its precursors from Scylliorhinus stellaris testes. Nature, 190(4771), 169–170
DOI: 10.1038/190169a0