[4] Crampin, M., Saunders, D. J.:
The Hilbert-Carathéodory and Poincaré-Cartan forms for higher-order multiple-integral variational problems. Houston J. Math. 30 (2004), 657-689.
MR 2083869 |
Zbl 1057.58008
[6] Dedecker, P. M.:
On the generalization of symplectic geometry to multiple integrals in the calculus of variations. Lecture Notes in Mathematics, Springer 570 (1977), 395-456.
DOI 10.1007/BFb0087794 |
MR 0458478 |
Zbl 0352.49018
[7] Giaquinta, M., Hildenbrandt, S.:
Calculus of Variations II. Springer (1996).
MR 1385926
[9] Rund, H.:
The Hamilton-Jacobi Equation in the Calculus of Variations. Van Nostrand (1966).
MR 0230189