On the topology of nonnegatively curved simply connected $4$ -manifolds with discrete symmetry
Yang, DaGang
Duke Math. J., Tome 76 (1994) no. 1, p. 531-545 / Harvested from Project Euclid
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Publié le : 1994-05-14
Classification:  53C20,  53C21,  57N13 
@article{1077288206,
     author = {Yang, DaGang},
     title = {On the topology of nonnegatively curved simply connected
 $4$ -manifolds with discrete symmetry},
     journal = {Duke Math. J.},
     volume = {76},
     number = {1},
     year = {1994},
     pages = { 531-545},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1077288206}
}

Yang, DaGang. On the topology of nonnegatively curved simply connected
 $4$ -manifolds with discrete symmetry. Duke Math. J., Tome 76 (1994) no. 1, pp.  531-545. http://gdmltest.u-ga.fr/item/1077288206/