Calculus of variations and optimal control theory / Magnus R. Hestenes. Hestenes, Magnus Rudolph, 1906- Calculus of variations. Control theory. QA315 .H45 517 19 HEC Includes index. Bibliography: p. 401-402. New York, Wiley 1966. 1966. 1966 Text xii, 405 p. eng Applied mathematics series