@article{CM_1968__20__13_0,
author = {Curry, Haskell B.},
title = {The equivalence of two definitions of elementary formal system},
journal = {Compositio Mathematica},
volume = {20},
year = {1968},
pages = {13-20},
mrnumber = {238671},
zbl = {0167.01002},
language = {en},
url = {http://dml.mathdoc.fr/item/CM_1968__20__13_0}
}
Curry, Haskell B. The equivalence of two definitions of elementary formal system. Compositio Mathematica, Tome 20 (1968) pp. 13-20. http://gdmltest.u-ga.fr/item/CM_1968__20__13_0/
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