参考文献
Freudenberg
Chemische Berichte, 1918 , vol. 51, p. 1675
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Hess; Leibbrandt
Chemische Berichte, 1918 , vol. 51, p. 819
Chemische Berichte, 1919 , vol. 52, p. 208
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Winterstein; Weinhagen
Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1919 , vol. 104, p. 53
Archiv der Pharmazie (Weinheim, Germany), 1919 , vol. 257, p. 10