@article{10_4064_ap_15_3_305_308,
     author = {J. Lewowicz},
     title = {Applications of elementary topological methods to existence problems for bounded solutions of systems of ordinary differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {305--308},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1964},
     doi = {10.4064/ap-15-3-305-308},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-15-3-305-308/}
}