Tan, Zhehao, et al. “PRGB Benchmark: A Robust Placeholder-Assisted Algorithm for Benchmarking Retrieval-Augmented Generation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 40, no. 39, Mar. 2026, pp. 33179-86, doi:10.1609/aaai.v40i39.40602.