@article{10_4064_ap_33_2_209_218,
     author = {J. Lig\k{e}za},
     title = {On generalized periodic solutions of linear differential equations of order n},
     journal = {Annales Polonici Mathematici},
     pages = {209--218},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1976},
     doi = {10.4064/ap-33-2-209-218},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-33-2-209-218/}
}