Shengdong Zhao, Ravin Balakrishnan. Simple vs. compound mark hierarchical marking menus. In Steven Feiner, James A. Landay, editors, Proceedings of the 17th Annual ACM Symposium on User Interface Software and Technology, Santa Fe, NM, USA, October 24-27, 2004. pages 33-42, ACM, 2004. [doi]
Abstract is missing.