Kemal, Oeznur; Reese, Colin B.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1981 , p. 1569 - 1573
Mitchell, James A.; Reid, David H.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , p. 499 - 507