Author: Chrastina, Jan

Chrastina, Jan: Another approach to the classical calculus of variations. II. Hamiltonian theory. (English). Archivum Mathematicum, vol. 19 (1983), issue 4, pp. 173-186
Chrastina, Jan: A double complex related with a system of partial differential equations. I. (English). Archivum Mathematicum, vol. 19 (1983), issue 2, pp. 83-97
Chrastina, Jan: A double complex related with a system of partial differential equations. II. (English). Archivum Mathematicum, vol. 19 (1983), issue 3, pp. 133-142

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