Alcázar, Vidal. “The Consistent Case in Bidirectional Search and a Bucket-to-Bucket Algorithm As a Middle Ground Between Front-to-End and Front-to-Front”. Proceedings of the International Conference on Automated Planning and Scheduling 31, no. 1 (May 17, 2021): 7-15. Accessed March 28, 2024. https://ojs.aaai.org/index.php/ICAPS/article/view/15941.