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Bergmark, W.R.; Johnes, G., II; Reinhardt, T.E.; Halpern, A.M., Photoisomerization of bis(9-anthryl)methane and other linked anthracenes. The role of excimers and biradicals in photodimerization, J. Am. Chem. Soc., 1978, 100, 6665-6673. [all data]