Large Language Models for Learner Assistance in Massive Open Online Courses: Challenges, Tools, and Approaches - del-Hoyo-Gabaldon, J.-A.; Garcia-Lopez, E.; Garcia-Cabot, A.; de-Fitero-Dominguez, D.; Wiltrout, M.-E.; Sandland, J.; Bell, A. (CEUR Workshop Proceedings, 2024)