@article{10_4064_sm202_1_3,
     author = {Carlos Lizama and Rodrigo Ponce},
     title = {Periodic solutions of degenerate differential equations in
vector-valued function spaces},
     journal = {Studia Mathematica},
     pages = {49--63},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {2011},
     doi = {10.4064/sm202-1-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm202-1-3/}
}