Potts, Renfrey B. 1925- Flows in transportation networks / by Renfrey B. Potts, Robert M. Oliver - New York : Academic Press, 1972 - xi,192 p. : ill. ; 24 cm. - Mathematics in science and engineering vol.90 . With answers Index ISBN: 0125636504 Subjects--Topical Terms: Transportation, Automotive--Mathematical models