Castro, M.P., Piacentini, C., Cire, A.A. and Beck, J.C. 2021. Relaxed BDDs: An Admissible Heuristic for Delete-Free Planning Based on a Discrete Relaxation. Proceedings of the International Conference on Automated Planning and Scheduling. 29, 1 (May 2021), 77-85. DOI:https://doi.org/10.1609/icaps.v29i1.3462.