Lamanna, L., A. E. Gerevini, A. Saetti, L. Serafini, and P. Traverso. “On-Line Learning of Planning Domains from Sensor Data in PAL: Scaling up to Large State Spaces”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 13, May 2021, pp. 11862-9, https://ojs.aaai.org/index.php/AAAI/article/view/17409.