[2009] Olivier Gauwin and Joachim Niehren and Sophie Tison, Bounded Delay and Concurrency for Earliest Query Answering, 3rd International Conference on Language
and Automata Theory and Applications, Lecture Notes in Computer Science 5457, 350-361
[2008] Mathias John and Cédric Lhoussaine and Joachim Niehren and Adelinde Uhrmacher, The Attributed Pi Calculus, Computational Methods in Systems Biology, 6th International Conference, Lecture Notes in Computer Science 5307, 83-102
[2008] Marco Kuhlmann and Joachim Niehren, Logics and Automata for Totally Ordered Trees, 19th International Conference on Rewriting Techniques and Applications, Lecture Notes in Computer Science 5117, 217-231
[2007] Emmanuel Filiot and Joachim Niehren and Jean-Marc Talbot and Sophie Tison, Polynomial Time Fragments of XPath with Variables, 26th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, 205-214
[2005] Joachim Niehren and Tim Priesnitz and Zhendong Su, Complexity of Subtype Satisfiability over Posets, 14th European Symposium on Programming, Lecture Notes in Computer Science 3444, 357-373
[2005] Joachim Niehren and Mateu Villaret, Describing Lambda Terms in Context Unification, 5th International Conference on Logical Aspects in Computational Linguistics, Lecture Notes in Artificial Intelligence 3492, 221-237
[2005] Joachim Niehren and Laurent Planque and Jean-Marc Talbot and Sophie Tison, N-ary Queries by Tree Automata, 10th International Symposium on Database Programming Languages, Lecture Notes in Computer Science 3774, 217--231
[2004] Julien Carme and Joachim Niehren and Marc Tommasi, Querying Unranked Trees with Stepwise Tree Automata, 19th International Conference on Rewriting Techniques and Applications, Lecture Notes in Computer Science 3091, 105--118
[2002] Zhendong Su and Alexander Aiken and Joachim Niehren and Tim Priesnitz and Ralf Treinen, First-Order Theory of Subtyping Constraints, The 29th Annual ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages
[2002] Joachim Niehren and Mateu Villaret, Parallelism and Tree Regular Constraints, International Conference on Logic for Programming, Artificial Intelligence and Reasoning, Lecture Notes in Artificial Intelligence 2514, 311--326
[2001] Manuel Bodirsky and Katrin Erk and Alexander Koller and Joachim Niehren, Underspecified Beta Reduction, 39th Annual Meeting of the Association for Computational Linguistics, 74-81
[2001] Manuel Bodirsky and Katrin E. Erk and Alexander Koller and Joachim Niehren, Beta Reduction Constraints, International Conference on Rewriting Techniques and Applications, Lecture Notes in Computer Science, 31-46
[2001] Joachim Niehren and Alexander Koller, Dominance Constraints in Context Unification, Proceedings of the 3rd International Conference on Logical Aspects of Computational Linguistics (Dec. 1998, Grenoble, France), Lecture Notes in Computer Science 2014, 199-218
[2001] Alexander Koller and Joachim Niehren and Ralf Treinen, Dominance Constraints: Algorithms and Complexity, Third International Conference on Logical Aspects of Computational Linguistics (Dec. 1998, Grenoble, France), Lecture Notes in Computer Science 2014, 106-125
[2000] Katrin E. Erk and Joachim Niehren, Parallelism Constraints, International Conference on Rewriting Techniques and Applications, Lecture Notes in Computer Science 1833, 110--126
[2000] Denys Duchier and Joachim Niehren, Dominance Constraints with Set Operators, Proceedings of the First International Conference on Computational Logic (CL2000), Lecture Notes in Computer Science 1861, 326-341
[1998] Markus Egg and Joachim Niehren and Peter Ruhrberg and Feiyu Xu, Constraints over Lambda-Structures in Semantic Underspecification, Joined 17th International Conference on Computational Linguistics and 36th Annual Meeting
of the Association for Computational Linguistics
(COLING/ACL'98), 353--359
[1997] Martin Müller and Joachim Niehren and Andreas Podelski, Inclusion Constraints over Non-Empty Sets of Trees, Theory and Practice of Software Development, International Joint Conference CAAP/FASE/TOOLS, Lecture Notes in Computer Science 1214, 217-231
[1997] Martin Müller and Joachim Niehren and Andreas Podelski, Ordering Constraints over Feature Trees, 3rd International Conference on Principles and Practice of Constraint Programming, Lecture Notes in Computer Science 1330, 297--311
[1993] Joachim Niehren and Andreas Podelski and Ralf Treinen, Equational and Membership Constraints for Infinite Trees, Proceedings. Fifth International Conference on Rewriting Techniques and Applications, Lecture Notes in Computer Science 690, 106-120
International Workshops
[2006] Emmanuel Filiot and Joachim Niehren and Jean-Marc Talbot and Sophie Tison, Composing Monadic Queries in Trees, PLAN-X International Workshop, 61--70
[2006] Zhendong Su and Alexander Aiken and Joachim Niehren and Tim Priesnitz and Ralf Treinen, First-Order Theory of Subtyping Constraints, ACM Transactions on Programming Languages and Systems