SOFSEM 2001
Computers, Computer Science, Conferences, 2001 - SOFSEM 2001. 28th Annual Conference on Current Trends in Theory and Practice of Informatics.
http://www.sofsem.sk/
Ubicomp 2009
Computers, Computer Science, Conferences, 2001 - UbiComp'2001. International Symposium on Ubiquitous Computing - formerly Handheld and Ubiquitous Computing.
https://ubicomp.org/