@article{1183738951,
author = {Geiser, James R.},
title = {A Formalization of Essenin-Volpin's Proof Theoretical Studies by Means of Nonstandard Analysis},
journal = {J. Symbolic Logic},
volume = {39},
number = {1},
year = {1974},
pages = { 81-87},
language = {en},
url = {http://dml.mathdoc.fr/item/1183738951}
}
Geiser, James R. A Formalization of Essenin-Volpin's Proof Theoretical Studies by Means of Nonstandard Analysis. J. Symbolic Logic, Tome 39 (1974) no. 1, pp. 81-87. http://gdmltest.u-ga.fr/item/1183738951/