Patrick Baudisch, John Pruitt, Steve Ball. Flat volume control: improving usability by hiding the volume control hierarchy in the user interface. In Elizabeth Dykstra-Erickson, Manfred Tscheligi, editors, Proceedings of the 2004 Conference on Human Factors in Computing Systems, CHI 2004, Vienna, Austria, April 24 - 29, 2004. pages 255-262, ACM, 2004. [doi]
Abstract is missing.