Shoppee et al.
Journal of the Chemical Society, 1957 , p. 4364,4368
Journal of the Chemical Society [Section] C: Organic, 1968 , p. 2211,2214

Schmutz; Schaltegger; Sanz
Helvetica Chimica Acta, 1951 , vol. 34, p. 1111,1122
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Eckhardt
Chemische Berichte, 1938 , vol. 71, p. 461,464