Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{IM_1973__22_142241, author = {Louis Block and John Franke}, title = {Existence of {Periodic} {Points} of {Maps} of {S1.}}, journal = {Inventiones mathematicae}, pages = {69--74}, publisher = {mathdoc}, volume = {22}, year = {1973}, zbl = {0272.58005}, url = {http://geodesic.mathdoc.fr/item/IM_1973__22_142241/} }
Louis Block; John Franke. Existence of Periodic Points of Maps of S1.. Inventiones mathematicae, Tome 22 (1973), pp. 69-74. http://geodesic.mathdoc.fr/item/IM_1973__22_142241/