@article{1077379121,
author = {Olin, Philip},
title = {Elementary extensions within reduced powers},
journal = {Duke Math. J.},
volume = {37},
number = {1},
year = {1970},
pages = { 421-429},
language = {en},
url = {http://dml.mathdoc.fr/item/1077379121}
}
Olin, Philip. Elementary extensions within reduced powers. Duke Math. J., Tome 37 (1970) no. 1, pp. 421-429. http://gdmltest.u-ga.fr/item/1077379121/