@article{1093635422,
author = {Williamson, Timothy},
title = {Verification, falsification, and cancellation in ${\rm KT}$.},
journal = {Notre Dame J. Formal Logic},
volume = {31},
number = {2},
year = {1990},
pages = { 286-290},
language = {en},
url = {http://dml.mathdoc.fr/item/1093635422}
}
Williamson, Timothy. Verification, falsification, and cancellation in ${\rm KT}$.. Notre Dame J. Formal Logic, Tome 31 (1990) no. 2, pp. 286-290. http://gdmltest.u-ga.fr/item/1093635422/