SpringerLink (Online service) & Cornelis, C. (2011). 35 years of fuzzy set theory: Celebratory volume dedicated to the retirement of Etienne E. Kerre. Springer.
Cita Chicago (17th ed.)SpringerLink (Online service) i Chris Cornelis. 35 Years of Fuzzy Set Theory: Celebratory Volume Dedicated to the Retirement of Etienne E. Kerre. Berlin, Heidelberg: Springer, 2011.
Cita MLA (9th ed.)SpringerLink (Online service) i Chris Cornelis. 35 Years of Fuzzy Set Theory: Celebratory Volume Dedicated to the Retirement of Etienne E. Kerre. Springer, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.