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@article{MZ_1922__12_167675, author = {Hardy G.H. and J.E. Littlewood}, title = {Some problems of}, journal = {Mathematische Zeitschrift}, pages = {161--188}, publisher = {mathdoc}, volume = {12}, year = {1922}, zbl = {48.0146.01}, url = {http://geodesic.mathdoc.fr/item/MZ_1922__12_167675/} }
Hardy G.H. and J.E. Littlewood. Some problems of. Mathematische Zeitschrift, Tome 12 (1922), pp. 161-188. http://geodesic.mathdoc.fr/item/MZ_1922__12_167675/