Neff Walker, John B. Smelcer. A comparison of selection time from walking and pull-down menus. In Jane Carrasco Chew, John A. Whiteside, editors, Conference on Human Factors in Computing Systems, CHI 1990, Seattle, WA, USA, April 1-5, 1990, Proceedings. pages 221-226, ACM, 1990. [doi]
Abstract is missing.