Carroll, Lewis.Through the Looking Glass and What Alice Found There Gardner, M. The Annotated AliceNew York: Simon & Schuster, 1960.
2.
McDermott, D. ; Doyle, J.Non-Monotonic Logic IMIT Artificial Intelligence Lab Memo AIM 486b, ASTI No. AD A078395. Cambridge: July 1979.
3.
Zadeh, L."Fuzzy Sets" in Information Control Volume 8, 1965, pages 338-353.
4.
"Outline of a New Approach to the Analysis of Complex Systems and Decision Processes" in IEEE Transactions on Systems, Man and Cybernetics. Volume 3, 1973, pages 28-44.
5.
"The Concept of a Linguistic Variable and Its Application to Approximate Reasoning--II" in Information Sciences. Volume 8, 1975, pages 301-357.
6.
"The Concept of a Linguistic Variable and Its Application to Approximate Reasoning---III" in Information Sciences. Volume 9, 1975, pages 43-80.