Samuel R. Buss, Roman Kuznets. The NP-Completeness of Reflected Fragments of Justification Logics. In Sergei N. Artëmov, Anil Nerode, editors, Logical Foundations of Computer Science, International Symposium, LFCS 2009, Deerfield Beach, FL, USA, January 3-6, 2009. Proceedings. Volume 5407 of Lecture Notes in Computer Science, pages 122-136, Springer, 2009. [doi]
Abstract is missing.