@article{01483964,
title = {Constructing Kripke models of certain fragments of Heyting's arithmetic.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {64(78)},
year = {1998},
pages = {1-8},
zbl = {0946.03070},
language = {en},
url = {http://dml.mathdoc.fr/item/01483964}
}
Wehmeier, Kai F. Constructing Kripke models of certain fragments of Heyting's arithmetic.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 64(78) (1998) pp. 1-8. http://gdmltest.u-ga.fr/item/01483964/