Zhou, S., Chiclana, F., John, R. I., & Garibaldi, J. M. (2008). Type-1 OWA operators for aggregating uncertain information with uncertain weights induced by type-2 linguistic quantifiers. Fuzzy Sets and Systems, 159(24), pp. 3281-3296. doi:10.1016/j.fss.2008.06.018

Zhou, Shang-ming, Francisco Chiclana, Robert I. John, and Jonathan M. Garibaldi. "Type-1 OWA Operators for Aggregating Uncertain Information With Uncertain Weights Induced By Type-2 Linguistic Quantifiers." Fuzzy Sets and Systems 159, no. 24 (2008): 3281-3296.

Zhou, Shang-ming, Francisco Chiclana, Robert I. John, and Jonathan M. Garibaldi. "Type-1 OWA Operators for Aggregating Uncertain Information With Uncertain Weights Induced By Type-2 Linguistic Quantifiers." Fuzzy Sets and Systems 159.24 (2008): 3281-3296.