B. Schaefermeier, T. Hanika, and G. Stumme. Proceedings of the 16th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services, ACM, (November 2019)
M. Stubbemann, T. Hanika, and G. Stumme. Advances in Intelligent Data Analysis XVIII - 18th International Symposium on Intelligent Data Analysis, IDA 2020, Konstanz, Germany, April 27-29, 2020, Proceedings, volume 12080 of Lecture Notes in Computer Science, page 496--508. Springer, (2020)
J. Lang. Proceedings of the 18th International Conference on Conceptual Structures (ICCS 2010), volume 6208 of Lecture Notes in Computer Science, page 3-9. Springer, (2010)