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), pp. 77-85. doi: 10.1609/icaps.v29i1.3462.