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Singular quadratic functionals and transformation of linear Hamiltonian systems
Archivum mathematicum, Tome 25 (1989) no. 4, pp. 223-234
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Došlá, Zuzana. Singular quadratic functionals and transformation of linear Hamiltonian systems. Archivum mathematicum, Tome 25 (1989) no. 4, pp. 223-234. http://geodesic.mathdoc.fr/item/ARM_1989_25_4_a4/

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