Stéphane Demri, Ranko Lazic, David Nowak. On the freeze quantifier in Constraint LTL: Decidability and complexity. Inf. Comput., 205(1):2-24, 2007. [doi]
@article{DemriLN07,
title = {On the freeze quantifier in Constraint LTL: Decidability and complexity},
author = {Stéphane Demri and Ranko Lazic and David Nowak},
year = {2007},
doi = {10.1016/j.ic.2006.08.003},
url = {http://dx.doi.org/10.1016/j.ic.2006.08.003},
tags = {constraints},
researchr = {https://researchr.org/publication/DemriLN07},
cites = {0},
citedby = {0},
journal = {Inf. Comput.},
volume = {205},
number = {1},
pages = {2-24},
}