参考文献
Butenandt; Schmidt-Thome
Chemische Berichte, 1936 , vol. 69, p. 882,887
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Ruzicka; Rosenberg
Helvetica Chimica Acta, 1936 , vol. 19, p. 357,365
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Butenandt; Cobler; Schmidt
Chemische Berichte, 1936 , vol. 69, p. 448