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Ruggli Cuenin Helvetica Chimica Acta, 1944 , vol. 27, p. 649,66 Show Details Simpson Journal of the Chemical Society, 1946 , p. 67 Show Details Horwitz Journal of Organic Chemistry, 1956 , vol. 21, p. 19 View citing articles Show Details Shaw Wagstaff Journal of the Chemical Society, 19 , p. 77