Marc Bezem. On the Undecidability of Coherent Logic. In Aart Middeldorp, Vincent van Oostrom, Femke van Raamsdonk, Roel C. de Vrijer, editors, Processes, Terms and Cycles: Steps on the Road to Infinity, Essays Dedicated to Jan Willem Klop, on the Occasion of His 60th Birthday. Volume 3838 of Lecture Notes in Computer Science, pages 6-13, Springer, 2005. [doi]
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