参考文献
Robinson; Smith
Journal of the Chemical Society, 1937 , p. 373
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Mosettig; Burger
Journal of the American Chemical Society, 1930 , vol. 52, p. 3456,3460
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Poehls,P.
Diss. <Marburg 1934> S. 1, 7, 14, 29, 30, 40