Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1939__116_160018, author = {C.F. Y\"u}, title = {On the vertices of an oval}, journal = {Mathematische Annalen}, pages = {571--573}, publisher = {mathdoc}, volume = {116}, year = {1939}, zbl = {65.0825.02}, url = {http://geodesic.mathdoc.fr/item/MAN_1939__116_160018/} }
C.F. Yü. On the vertices of an oval. Mathematische Annalen, Tome 116 (1939), pp. 571-573. http://geodesic.mathdoc.fr/item/MAN_1939__116_160018/