@article{1093870927,
author = {Boolos, George},
title = {$1$-consistency and the diamond.},
journal = {Notre Dame J. Formal Logic},
volume = {26},
number = {1},
year = {1985},
pages = { 341-347},
language = {en},
url = {http://dml.mathdoc.fr/item/1093870927}
}
Boolos, George. $1$-consistency and the diamond.. Notre Dame J. Formal Logic, Tome 26 (1985) no. 1, pp. 341-347. http://gdmltest.u-ga.fr/item/1093870927/