@article{03764327,
title = {On the periodic solutions of linear homogeneous systems of differential equations.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {5},
year = {1982},
pages = {305-309},
doi = {10.1155/S0161171282000283},
zbl = {0486.34023},
language = {en},
url = {http://dml.mathdoc.fr/item/03764327}
}
Bose, A.K. On the periodic solutions of linear homogeneous systems of differential equations.. International Journal of Mathematics and Mathematical Sciences, Tome 5 (1982) pp. 305-309. doi : 10.1155/S0161171282000283. http://gdmltest.u-ga.fr/item/03764327/