参考文献
Hahn
Patent: DE646706 , 1936 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 24, p. 414
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Merchant
Journal of Scientific and Industrial Research, 1957 , vol. 16 B, p. 373
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Hahn; Stiehl
Chemische Berichte, 1936 , vol. 69, p. 2627,2640