1. Xing, C., Cheng, Z., & Qu, J. (2005). Chemical Reaction Engineering and Technology, 21, 239–243.
2. Gu, X., Yu, W., & Ren, F. (2004). Petrochemical Technology, 33, 360.
3. Meng, Q., Xi, H., Jiang, Y., & Sun, X. (2007). Speciality Petrochemicals, 24, 27–29.
4. Petersson, A. E. V., Gustafsson, L. M., Nordblad, M., Borjesson, P., Mattiasson, B., & Adlercreutz, P. (2005). Green Chemistry, 7, 837–843. doi: 10.1039/b510815b .
5. Gryglewicz, S. (2001). Journal of Molecular Catalysis. B, Enzymatic, 15, 9–13. doi: 10.1016/S1381-1177(00)00246-0 .