@article {3701,
	title = {Query Reformulation Using Query History for Passage Retrieval in Conversational Search},
	journal = {ArXiv},
	volume = {abs/2005.02230},
	year = {2020},
	url = {https://arxiv.org/abs/2005.02230},
	author = {Sheng-Chieh Lin and Jheng-Hong Yang and Rodrigo Nogueira and Ming-Feng Tsai and Chuan-Ju Wang and Jimmy Lin}
}
