Xiao, Z., Wan, H., Zhuo, H. H., Herzig, A., Perrussel, L., & Chen, P. (2020). Refining HTN Methods via Task Insertion with Preferences. Proceedings of the AAAI Conference on Artificial Intelligence, 34(06), 10009-10016. https://doi.org/10.1609/aaai.v34i06.6557