Napolitano, D., Cagliero, L., & Battiloro, F. (2026). Benchmarking Visual LLMs Resilience to Unanswerable Questions on Visually Rich Documents. Proceedings of the AAAI Conference on Artificial Intelligence, 40(10), 8125-8133. https://doi.org/10.1609/aaai.v40i10.37759