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MR ZblDošlá, 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/
@article{ARM_1989_25_4_a4,
author = {Do\v{s}l\'a, Zuzana},
title = {Singular quadratic functionals and transformation of linear {Hamiltonian} systems},
journal = {Archivum mathematicum},
pages = {223--234},
year = {1989},
volume = {25},
number = {4},
mrnumber = {1188066},
zbl = {0825.34020},
language = {en},
url = {http://geodesic.mathdoc.fr/item/ARM_1989_25_4_a4/}
}
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