@inproceedings{sidiropoulos-etal-2021-combining,
    title = "Combining Lexical and Dense Retrieval for Computationally Efficient Multi-hop Question Answering",
    author = "Sidiropoulos, Georgios  and
      Voskarides, Nikos  and
      Vakulenko, Svitlana  and
      Kanoulas, Evangelos",
    editor = "Moosavi, Nafise Sadat  and
      Gurevych, Iryna  and
      Fan, Angela  and
      Wolf, Thomas  and
      Hou, Yufang  and
      Marasovi{\'c}, Ana  and
      Ravi, Sujith",
    booktitle = "Proceedings of the Second Workshop on Simple and Efficient Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Virtual",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.sustainlp-1.7/",
    doi = "10.18653/v1/2021.sustainlp-1.7",
    pages = "58--63"
}