Richmond H. Thomason, D. Randolph Johnson Jr.. Predicate Calculus with Free Quantifier Variables. Journal of Symbolic Logic, 34(1):1-7, 1969.
@article{ThomasonJ69,
title = {Predicate Calculus with Free Quantifier Variables},
author = {Richmond H. Thomason and D. Randolph Johnson Jr.},
year = {1969},
researchr = {https://researchr.org/publication/ThomasonJ69},
cites = {0},
citedby = {0},
journal = {Journal of Symbolic Logic},
volume = {34},
number = {1},
pages = {1-7},
}