@inproceedings{ilvovsky-etal-2020-controlling, title = "Controlling Chat Bot Multi-Document Navigation with the Extended Discourse Trees", author = "Ilvovsky, Dmitry and Kirillovich, Alexander and Galitsky, Boris", booktitle = "Proceedings of the Fourth International Conference on Computational Linguistics in Bulgaria (CLIB 2020)", month = sep, year = "2020", address = "Sofia, Bulgaria", publisher = "Department of Computational Linguistics, IBL -- BAS", url = "https://aclanthology.org/2020.clib-1.7/", pages = "63--71" }