1. Baader, F., Calvanese, D., McGuinness, D., Nardi, D., Patel-Schneider, P. (Eds.), 2002. Description Logic Handbook. Cambridge University Press.
2. Baaz, M., 1996. Infinite-valued Gödel logics with 0-1-projections and relativizations, in: Gödel'96: Logical foundations of mathematics, computer science and physics—Kurt Gödel's legacy, pp. 23–33.
3. Blackburn, P., de Rijke, M., Venema, Y., 2001. Modal Logic. Number 53 in Cambridge Tracts in Theoretical Computer Science, Cambridge University Press. doi: 10.1017/CBO9781107050884.
4. Bobillo, F., Cerami, M., Esteva, F., García-Cerdaña, Á., Peñaloza, R., Straccia, U., 2015. Fuzzy description logics, in: Handbook of Mathematical Fuzzy Logic, Volume 3, College Publications. pp. 1105–1181.
5. Borgwardt, S., Distel, F., Peñaloza, R., 2015. The limits of decidability in fuzzy description logics with general concept inclusions. Artif. Intell. 218, 23–55. doi: 10.1016/j.artint.2014.09.001.