Dauben et al.
Journal of the American Chemical Society, 1954 , vol. 76, p. 4420,4425
Full Text Show Details
Hueckel; Tappe; Legutke
Justus Liebigs Annalen der Chemie, 1940 , vol. 543, p. 191,210
Full Text Show Details
Hueckel
Justus Liebigs Annalen der Chemie, 1938 , vol. 533, p. 1,26