Pliuškevičius, Regimantas, and Aurimas Paulius Girčys. “Saturation Method for Reflexive Common Knowledge Logic”. Lietuvos matematikos rinkinys 53, no. A (December 15, 2012): 108–111. Accessed May 5, 2024. https://www.journals.vu.lt/LMR/article/view/14891.