@article{1093870626,
author = {Marker, David},
title = {A model theoretic proof of Feferman's preservation theorem.},
journal = {Notre Dame J. Formal Logic},
volume = {25},
number = {1},
year = {1984},
pages = { 213-216},
language = {en},
url = {http://dml.mathdoc.fr/item/1093870626}
}
Marker, David. A model theoretic proof of Feferman's preservation theorem.. Notre Dame J. Formal Logic, Tome 25 (1984) no. 1, pp. 213-216. http://gdmltest.u-ga.fr/item/1093870626/