@article{10_4064_ap100_2_1,
     author = {Yongxiang Li and He Yang},
     title = {Existence and uniqueness of periodic solutions
for odd-order ordinary differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {105--114},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {2011},
     doi = {10.4064/ap100-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap100-2-1/}
}