@article{Torralba Arias de ReynaLinares LópezBorrajo_2018,
title={Symbolic perimeter abstraction heuristics for cost-optimal planning},
author={Torralba Arias de Reyna, Alvaro and Linares López, Carlos and Borrajo, Daniel},
issn={1872-7921},
doi={http://dx.doi.org/10.22028/D291-29351},
volume={259},
pages={1-31},
publisher={Elsevier},
journal={Artificial Intelligence},
year={2018}
}