The Inverse Problem of the Calculus of Variations for Ordinary Differential Equations [Memoirs of the American Mathematical Society] (Paperback) ISBN-13: 9780821825334 ISBN-10: 082182533X ? |
The Inverse Problem of the Calculus of Variations for Ordinary Differential Equations [Memoirs of the American Mathematical Society] (Paperback) ISBN-13: 9780821825334 ISBN-10: 082182533X ? |