Shperberg, S. S., Danishevski, S., Felner, A., & Sturtevant, N. R. (2021). Iterative-Deepening Bidirectional Heuristic Search with Restricted Memory. Proceedings of the International Symposium on Combinatorial Search, 12(1), 194–196. https://doi.org/10.1609/socs.v12i1.18581