@article{CLTM_2009_2009_1_a19,
     author = {Annoni, Marco and  Grafakos, Loukas and  Honz{\'\i}k, Petr},
     title = {On an inequality of {Sagher} and {Zhou} concerning {Stein's} lemma.},
     journal = {Collectanea mathematica},
     pages = {297-306},
     publisher = {mathdoc},
     volume = {60},
     number = {3},
     year = {2009},
     zbl = {1187.42005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_2009_2009_1_a19/}
}