Geodesic
On a problem of Hopf
Matematičeskie zametki, Tome 68 (2000) no. 4, pp. 637-640 
Yu. A. Aminov. On a problem of Hopf. Matematičeskie zametki, Tome 68 (2000) no. 4, pp. 637-640. http://geodesic.mathdoc.fr/item/MZM_2000_68_4_a15/
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     author = {Yu. A. Aminov},
     title = {On a problem of {Hopf}},
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     year = {2000},
     volume = {68},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_68_4_a15/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

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