1. S. Glasstone:Textbook of Physical Chemistry, 2nd. ed., p. 276, D. Van Nostrand Co., NJ, 1946.
2. M. Knudsen:Annal. Phys., 1915, vol. 47, p. 697.
3. G. Luchak and G. O. Langstroth:Can. J. Res., 1950, vol. 28, p. 574.
4. G. Burrows:Molecular Distillation, p. 27, Oxford at the Clarendon Press, 1960.
5. E. R. Giliand:Industrial and Engineering Chemistry, p. 681, McGraw-Hill Book Co., NY, 1934.