1. Anger, B., Lembcke, J.: Infinitely subadditive capacities as upper envelopes of measures. Zeitschrift für Wahrscheinlichkeitstheorie und verwandte Gebiete 68(3), 403–414 (1985)
2. Blackburn, P., de Rijke, M., Venema, Y.: Modal Logic. Cambridge University Press, Cambridge (2002)
3. Castaño, D., Cimadamore, C., Varela, J.P.D., Rueda, L.: Completeness for monadic fuzzy logics via functional algebras. Fuzzy Sets Syst. 407, 161–174 (2021)
4. Chang, C.C.: A new proof of the completeness of the lukasiewicz axioms. Trans. Am. Math. Soc. 95(1), 74–80 (1959)
5. Flaminio, T., Godo, L., Marchioni E.: Reasoning about uncertainty of fuzzy events: an overview. In: Understanding Vagueness - Logical, Philosophical, and Linguistic Perspectives, Cintula, P., et al. (Eds.), College Publications, pp. 367–400 (2011)