Ribas; Seoane Anales de la Real Sociedad Espanola de Fisica y Quimica, Serie B: Quimica, 1949 , vol. 45, p. 599,620,621 Full Text Show Details Marchant; Lucas; McClelland Canadian Journal of Research, Section B: Chemical Sciences, 1942 , vol. 20, p. 5,7, 9