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 January 1, 2026. https://www.zurnalai.vu.lt/LMR/article/view/14891.