@article{CREG-SL,
  author    = {Linh Anh Nguyen and
               Andrzej Sza{\l}as},
  title     = {{ExpTime} Tableau Decision Procedures for Regular Grammar
               Logics with Converse},
  journal   = {Studia Logica},
  volume    = {98},
  number    = {3},
  year      = {2011},
  pages     = {387-428}
}