@article{1093883182, author = {Titiev, Robert J.}, title = {On self-sustenance in systems of epistemic logic.}, journal = {Notre Dame J. Formal Logic}, volume = {21}, number = {1}, year = {1980}, pages = { 585-590}, language = {en}, url = {http://dml.mathdoc.fr/item/1093883182} }
Titiev, Robert J. On self-sustenance in systems of epistemic logic.. Notre Dame J. Formal Logic, Tome 21 (1980) no. 1, pp. 585-590. http://gdmltest.u-ga.fr/item/1093883182/