(3) R. Weissberger ed.: Technigue of Organic Chemisty, Physical Methods of Organic Chemistry, 3 rd ed. Chapter IX. Interscience Publ., New York, 1959, Vol. I, Part I.
(3) R. Weissberger ed.: Technigue of Organic Chemisty, Physical Methods of Organic Chemistry, 3 rd ed. Chapter IX. Interscience Publ., New York, 1959, Vol. I, Part I.