When did Jean-Pierre Jouannaud become a full professor at the Université de Paris-Sud?
1986
Theoret. Comput. Sci. 272 (1-2) (2002) 41-68 was authored by Jean-Pierre Jouannaud. Stéphane Kaplan and Jean-Pierre Jouannaud: Conditional Term Rewriting Systems, 1st International Workshop, Orsay, France, July 8-10, 1987, Proceedings (1988) edited by Jean-Pierre Jouannaud. Bruno Barras et al.: CoQMTU: A Higher-Order Type Theory with  Jean-Pierre Jouannaud et al.: OBJ: Programming with Equalitiers, Subsorts, Overloading and Parameterization. (1988) authored by Jean-Pierre Jouannaud. Hubert Comon et al.: Decidable Problems in Shallow Equational Theories. (2006) authored by Jean-Pierre Jouannaud. Jean-Pierre Jouannaud was a member of the steering committee of several international computer science conferences: International Conference on Rewriting Techniques and Applications (RTA) 1989–1994, IEEE Symposium on Logic in Computer Science (CSL) 1993–1997, Conference for Computer Science Logic (CSL) 1993–1997, and Federated Logic Conference (FLoC) 1995–1999.
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Question: When did Jean-Pierre Jouannaud become a full professor at the Université de Paris-Sud?
Context: Theoret. Comput. Sci. 272 (1-2) (2002) 41-68 was authored by Jean-Pierre Jouannaud. Stéphane Kaplan and Jean-Pierre Jouannaud: Conditional Term Rewriting Systems, 1st International Workshop, Orsay, France, July 8-10, 1987, Proceedings (1988) edited by Jean-Pierre Jouannaud. Bruno Barras et al.: CoQMTU: A Higher-Order Type Theory with  Jean-Pierre Jouannaud et al.: OBJ: Programming with Equalitiers, Subsorts, Overloading and Parameterization. (1988) authored by Jean-Pierre Jouannaud. Hubert Comon et al.: Decidable Problems in Shallow Equational Theories. (2006) authored by Jean-Pierre Jouannaud. Jean-Pierre Jouannaud was a member of the steering committee of several international computer science conferences: International Conference on Rewriting Techniques and Applications (RTA) 1989–1994, IEEE Symposium on Logic in Computer Science (CSL) 1993–1997, Conference for Computer Science Logic (CSL) 1993–1997, and Federated Logic Conference (FLoC) 1995–1999.
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