Zhou, S., Zhou, . S., Garibaldi, J., John, R., & Chiclana, F. (2009). On Constructing Parsimonious Type-2 Fuzzy Logic Systems via Influential Rule Selection. IEEE Transactions on Fuzzy Systems, 17(3), pp. 654-667. doi:10.1109/TFUZZ.2008.928597

Zhou, Shang-ming, Shang-Ming Zhou, J.M Garibaldi, R.I John, and F. Chiclana. "On Constructing Parsimonious Type-2 Fuzzy Logic Systems Via Influential Rule Selection." IEEE Transactions On Fuzzy Systems 17, no. 3 (2009): 654-667.

Zhou, Shang-ming, et al. "On Constructing Parsimonious Type-2 Fuzzy Logic Systems Via Influential Rule Selection." IEEE Transactions On Fuzzy Systems 17.3 (2009): 654-667.