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@article{MZ_1996__223_3_174943, author = {K. Athanassopoulos}, title = {One-dimensional chain recurrent sets of flows in the 2-sphere.}, journal = {Mathematische Zeitschrift}, pages = {643--650}, publisher = {mathdoc}, volume = {223}, number = {3}, year = {1996}, zbl = {0872.58051}, url = {http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174943/} }
K. Athanassopoulos. One-dimensional chain recurrent sets of flows in the 2-sphere.. Mathematische Zeitschrift, Tome 223 (1996) no. 3, pp. 643-650. http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174943/