Strating; Backer Recueil des Travaux Chimiques des Pays-Bas, 1943 , vol. 62, p. 57,60 Full Text Show Details Huston; Kaye Journal of the American Chemical Society, 1942 , vol. 64, p. 1576,1578 Full Text Show Details Legge Journal of the American Chemical Society, 1947 , vol. 69, p. 2079,2083