J. Neidhardt, W. Wörndl, T. Kuflik, M. Zanker, C. Barbu:
"RecTour 2019: workshop on recommenders in tourism";
in: "RecSys '19: Proceedings of the 13th ACM Conference on Recommender Systems", ACM Digital Library, 2019, 564 - 565.
http://dx.doi.org/10.1145/3298689.3346969