A knowledge-based approach to the shortest path problem in a digitized map. - Erland Jungert; Peter D. Holmes (VL, 1988)

A Hierarchical Knowledge Structure for Heuristic Path Planning. - Erland Jungert; Peter D. Holmes (IAS, 1989)

Visual reply to map-related queries-a free space graph approach. - Peter D. Holmes (VL, 1989)

Visual reply to map-related queries. - Peter D. Holmes (J. Vis. Lang. Comput., 1991)

Symbolic and Geometric Connectivity Graph Methods for Route Planning in Digitized Maps. - Peter D. Holmes; Erland Jungert (IEEE Trans. Pattern Anal. Mach. Intell., 1992)

An Architecture for Unified Dialogue in Distributed Object Systems. - Arve Larsen; Peter D. Holmes (TOOLS (26), 1998)