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@article{AM_1999_149_2_a6, author = {Gaoyong Zhang}, title = {A positive solution to the {Busemann-Petty} problem in $\bbfR^4$}, journal = {Annals of mathematics}, publisher = {mathdoc}, volume = {149}, number = {2}, year = {1999}, url = {http://geodesic.mathdoc.fr/item/AM_1999_149_2_a6/} }
Gaoyong Zhang. A positive solution to the Busemann-Petty problem in $\bbfR^4$. Annals of mathematics, Tome 149 (1999) no. 2. http://geodesic.mathdoc.fr/item/AM_1999_149_2_a6/