@article{10_4064_ap_29_3_233_258,
     author = {Mary L. Cartwright and H. P. F. Swinnerton-Dyer},
     title = {Boundedness theorems for some second order differential equations {I}},
     journal = {Annales Polonici Mathematici},
     pages = {233--258},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1974},
     doi = {10.4064/ap-29-3-233-258},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-29-3-233-258/}
}