@article{1183739475, author = {Thomason, S. K.}, title = {Categories of Frames for Modal Logic}, journal = {J. Symbolic Logic}, volume = {40}, number = {1}, year = {1975}, pages = { 439-442}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739475} }
Thomason, S. K. Categories of Frames for Modal Logic. J. Symbolic Logic, Tome 40 (1975) no. 1, pp. 439-442. http://gdmltest.u-ga.fr/item/1183739475/