@article{1183732300,
author = {Henkin, Leon},
title = {Two Concepts From the Theory of Models},
journal = {J. Symbolic Logic},
volume = {21},
number = {1},
year = {1956},
pages = { 28-32},
language = {en},
url = {http://dml.mathdoc.fr/item/1183732300}
}
Henkin, Leon. Two Concepts From the Theory of Models. J. Symbolic Logic, Tome 21 (1956) no. 1, pp. 28-32. http://gdmltest.u-ga.fr/item/1183732300/