@article{MZ_1935__39_168579,
     author = {G.H., Landau, E. und Li Hardy and J.E., J.E. Littlewood},
     title = {Some inequalities satisfied by the integrals or derivatives of real or analytic functions},
     journal = {Mathematische Zeitschrift},
     pages = {677--695},
     publisher = {mathdoc},
     volume = {39},
     year = {1935},
     zbl = {0011.06102},
     url = {http://geodesic.mathdoc.fr/item/MZ_1935__39_168579/}
}