Soederberg, Bjoern C.; Helton, E. Scott; Austin, Lucinda R.; Odens, Herman H.
Journal of Organic Chemistry, 1993 , vol. 58, # 21 p. 5589 - 5591

Crotti, Corrado; Cenini, Sergio; Rindone, Bruno; Tollari, Stefano; Demartin, Francesco
Journal of the Chemical Society, Chemical Communications, 1986 , # 10 p. 784 - 786