@article{1103036301,
author = {Chang, C. C. and Keisler, H. Jerome},
title = {Applications of ultraproducts of pairs of cardinals to the theory of models.},
journal = {Pacific J. Math.},
volume = {12},
number = {4},
year = {1962},
pages = { 835-845},
language = {en},
url = {http://dml.mathdoc.fr/item/1103036301}
}
Chang, C. C.; Keisler, H. Jerome. Applications of ultraproducts of pairs of cardinals to the theory of models.. Pacific J. Math., Tome 12 (1962) no. 4, pp. 835-845. http://gdmltest.u-ga.fr/item/1103036301/