Gilles Dowek, Ying Jiang. Eigenvariables, bracketing and the decidability of positive minimal predicate logic. Theoretical Computer Science, 360(1-3):193-208, 2006. [doi]
@article{DowekJ06,
title = {Eigenvariables, bracketing and the decidability of positive minimal predicate logic},
author = {Gilles Dowek and Ying Jiang},
year = {2006},
doi = {10.1016/j.tcs.2006.01.053},
url = {http://dx.doi.org/10.1016/j.tcs.2006.01.053},
tags = {logic},
researchr = {https://researchr.org/publication/DowekJ06},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {360},
number = {1-3},
pages = {193-208},
}