Uebe, Götz Optimale Fahrpläne. - Berlin: New York: Springer-Verlag, 1970. - ix, 161 p.: illus., 26 cm. - Lecture notes in operations research and mathematical systems 20 . Bibliography: p. [152]-161. LCCN: 77111902 Nat. Bib. No.: GDB*** Subjects--Topical Terms: Operations research-Transportation---Mathematical models.Mathematical optimization.