Wearable interfaces for orientation and wayfinding. - David A. Ross; Bruce B. Blasch (ASSETS, 2000)

Evaluation of Orientation Interfaces for Wearable Computers. - David A. Ross; Bruce B. Blasch (ISWC, 2000)

Development of a Wearable Computer Orientation System. - David A. Ross; Bruce B. Blasch (Pers. Ubiquitous Comput., 2002)