Variational calculus and optimal control :
Variational calculus and optimal control :
Troutman, John L.
- 2nd ed.
- New York : Springer, 1996
- xv, 461 p. : ill. ; 25 cm.
- Undergraduate texts in mathematics .
0387945113 (hardcover : alk. paper)
0387945113 (hardcover : alk. paper)