@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/