Retrieval-Augmented Generation for Large Language Models: A Survey, Yunfan Gao, Yun Xiong, Xinyu Gao, Kangxiang Jia, Jinliu Pan, Yuxi Bi, Yi Dai, Jiawei Sun, Meng Wang, Haofen Wang, 2023arXiv preprint arXiv:2312.10997DOI: 10.48550/arXiv.2312.10997 - Provides a comprehensive overview of retrieval-augmented generation, including discussions on evaluation methodologies and challenges in real-world scenarios.