Mikhail Mrykhin, Alexander Okhotin. The Hardest LL(k) Language. In Nelma Moreira, Rogério Reis, editors, Developments in Language Theory - 25th International Conference, DLT 2021, Porto, Portugal, August 16-20, 2021, Proceedings. Volume 12811 of Lecture Notes in Computer Science, pages 304-315, Springer, 2021. [doi]
Abstract is missing.