@article{1093888510, author = {Schumm, George F.}, title = {Putting ${\cal K}$ in its place.}, journal = {Notre Dame J. Formal Logic}, volume = {19}, number = {1}, year = {1978}, pages = { 623-628}, language = {en}, url = {http://dml.mathdoc.fr/item/1093888510} }
Schumm, George F. Putting ${\cal K}$ in its place.. Notre Dame J. Formal Logic, Tome 19 (1978) no. 1, pp. 623-628. http://gdmltest.u-ga.fr/item/1093888510/