1. Bohemen, J., and Purnell, J. H., “Gas Chromatography”, 6, edit. D. H. Desty, (Butterworth, London, 1958).
2. Littlewood, A. B., ibid., 23, 35.
3. Glueckauf, E., “Vapor Phase Chromatography”, 29. edit. D. H. Desty (Butterworth, London, 1957).
4. Beran, M. J., J. Chem. Phys., 27, 270 (1957).
5. Giddings, J. C., J. Chem. Educ., 35, 588 (1958).