1. F. Lipnizki, R.W. Field and P. K. Ten, J. Membr. Sci., 153, 183 (1999).
2. V. Lim, B. Park, F. Hung, M. Sahimi and T. T. Tsotsis, Chem. Eng. Sci., 57, 4933 (2002).
3. Y. Morigami, M. Kondo, J. Abe, H. Kita and K. Okamoto, Sep. Purif. Technol., 25, 251 (2001).
4. M. P. Bernal, J. Coronas, M. Menendez and J. Santamaria, Int. J. Santamaria (Ed.), Fourth International Conference on Catalysis in Membrane Reactors, ICCMR, Zaragosa, Spain, 71 (2000).
5. K. Tanaka, H. Kita and K. Okamoto, Int. J. Santamaria (Ed.), Fourth International Conference on Catalysis in Membrane Reactors, ICCMR, Zaragosa, Spain, 73 (2000).