Akman Varol Unobstructed shortest paths in polyhedral environments by Akman Varol - Berlin Springer Verlag 1987 - 103p. cm. - Lecture noter in computer science; 251 . Bibliography 93-103p. Standard No.: 67790 Source: Textual Subjects--Topical Terms: Computer science Dewey Class. No.: D65,8(B):(B257), M7