@article{02187723,
title = {Intuitionistic Frege systems are polynomially equivalent.},
journal = {Zapiski Nauchnykh Seminarov POMI},
volume = {314},
year = {2004},
pages = {129-146},
zbl = {1095.03062},
language = {en},
url = {http://dml.mathdoc.fr/item/02187723}
}
Mints, G.; Kojevnikov, A. Intuitionistic Frege systems are polynomially equivalent.. Zapiski Nauchnykh Seminarov POMI, Tome 314 (2004) pp. 129-146. http://gdmltest.u-ga.fr/item/02187723/