1. 1Cf., e.g, and Glasstone Samuel . Theoretical Chemistry, an Introduction to Quantum Mechanics, Statistical Mechanics, and Molecular Spectra for Chemists , pp.466 -67 . D. Van Nostrand Co., Inc., New York, 1944 . 466 pp.
2. 2J. H. Hildebrand, and R. L. Scott , Solubility of Nonelectrolytes , 3d ed. Reinhold Publishing Corp., New York, 1950 . 475 pp.