1. S. T. Hwang, AIChE J., 50, 862 (2004).
2. R. Barrer, Diffusion in and through Solids, Cambridge University Press, London, 144 (1951).
3. S. T. Hwang and K. Kammermeyer, Techniques of chemistry, VII: Membranes in separations, Wiley Interscience: New York, 92(a), 204(b) (1975).
4. S. Hamakawa, T. Hibino and H. Iwahara, J. Electrochem. Soc., 14, 1720 (1994).
5. X.W. Qi and Y. S. Lin, Solid State Ionics, 130(1–2), 149 (2000).