@article{107000,
author = {Heinrich W. Guggenheimer},
title = {On focal points and limit behavior of solutions of linear differential equations},
journal = {Archivum Mathematicum},
volume = {014},
year = {1978},
pages = {139-143},
zbl = {0403.34027},
mrnumber = {0508430},
language = {en},
url = {http://dml.mathdoc.fr/item/107000}
}
Guggenheimer, Heinrich W. On focal points and limit behavior of solutions of linear differential equations. Archivum Mathematicum, Tome 014 (1978) pp. 139-143. http://gdmltest.u-ga.fr/item/107000/
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