@article{1093883052, author = {Schock, Rolf}, title = {A natural deduction system of indexical logic.}, journal = {Notre Dame J. Formal Logic}, volume = {21}, number = {1}, year = {1980}, pages = { 351-364}, language = {en}, url = {http://dml.mathdoc.fr/item/1093883052} }
Schock, Rolf. A natural deduction system of indexical logic.. Notre Dame J. Formal Logic, Tome 21 (1980) no. 1, pp. 351-364. http://gdmltest.u-ga.fr/item/1093883052/