@article{1183736618,
author = {Thomason, Richmond H. and Johnson, D. Randolph},
title = {Predicate Calculus with Free Quantifier Variables},
journal = {J. Symbolic Logic},
volume = {34},
number = {1},
year = {1969},
pages = { 1-7},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736618}
}
Thomason, Richmond H.; Johnson, D. Randolph. Predicate Calculus with Free Quantifier Variables. J. Symbolic Logic, Tome 34 (1969) no. 1, pp. 1-7. http://gdmltest.u-ga.fr/item/1183736618/