@article{SMJ2_2007_33_1_a4,
     author = {R\'ev\'esz, Szil\'ard},
     title = {On some {Extremal} {Problems} of {Landau}},
     journal = {Serdica Mathematical Journal},
     pages = {125--162},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2007_33_1_a4/}
}