参考文献
Schmutz; Schaltegger; Sanz
Helvetica Chimica Acta, 1951 , vol. 34, p. 1111,1122
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Wander A.G.
Patent: DE956509 , 1956 ;
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Schaltegger
Helvetica Chimica Acta, 1950 , vol. 33, p. 2101,2107
Experientia, 1949 , vol. 5, p. 321
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Schaltegger; Muellner
Helvetica Chimica Acta, 1951 , vol. 34, p. 1096,1108