The Interactive 3D BreakAway Map: A navigation and examination aid for multi-floor 3D worlds. - Luca Chittaro; Vijay Kumar Gatla; Subramanian Venkataraman (CW, 2005)

A Navigation and Examination Aid for 3D Virtual Buildings. - Luca Chittaro; Vijay Kumar Gatla; Subramanian Venkataraman (INTERACT, 2005)