@article{1103039458,
author = {Lyndon, Roger C.},
title = {An interpolation theorem in the predicate calculus.},
journal = {Pacific J. Math.},
volume = {9},
number = {4},
year = {1959},
pages = { 129-142},
language = {en},
url = {http://dml.mathdoc.fr/item/1103039458}
}
Lyndon, Roger C. An interpolation theorem in the predicate calculus.. Pacific J. Math., Tome 9 (1959) no. 4, pp. 129-142. http://gdmltest.u-ga.fr/item/1103039458/