Shperberg, S. S., Felner, A., Sturtevant, N. R., Shimony, S. E. and Hayoun, A. (2019) “Enriching Non-Parametric Bidirectional Search Algorithms”, Proceedings of the AAAI Conference on Artificial Intelligence, 33(01), pp. 2379-2386. doi: 10.1609/aaai.v33i01.33012379.