@article{ASENS_1980_4_13_4_437_0,
author = {Neuman, F.},
title = {Second order linear differential systems},
journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
volume = {13},
year = {1980},
pages = {437-449},
doi = {10.24033/asens.1391},
mrnumber = {82d:34053},
zbl = {0453.34006},
language = {en},
url = {http://dml.mathdoc.fr/item/ASENS_1980_4_13_4_437_0}
}
Neuman, F. Second order linear differential systems. Annales scientifiques de l'École Normale Supérieure, Tome 13 (1980) pp. 437-449. doi : 10.24033/asens.1391. http://gdmltest.u-ga.fr/item/ASENS_1980_4_13_4_437_0/
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