@article{IIGUM_2018_25_a0,
     author = {T. Aiki and N. Sato},
     title = {Existence of periodic solution to one dimensional
},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {3--18},
     publisher = {mathdoc},
     volume = {25},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2018_25_a0/}
}