参考文献
Hueckel; Bretschneider
Justus Liebigs Annalen der Chemie, 1939 , vol. 540, p. 157,180
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Wooster; Smith
Journal of the American Chemical Society, 1931 , vol. 53, p. 179
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Birch
Quart. Rev., 1950 , vol. 4, p. 69,88