@article{1093870577,
author = {Montagna, Franco},
title = {The predicate modal logic of provability.},
journal = {Notre Dame J. Formal Logic},
volume = {25},
number = {1},
year = {1984},
pages = { 179-189},
language = {en},
url = {http://dml.mathdoc.fr/item/1093870577}
}
Montagna, Franco. The predicate modal logic of provability.. Notre Dame J. Formal Logic, Tome 25 (1984) no. 1, pp. 179-189. http://gdmltest.u-ga.fr/item/1093870577/