@article{MAN_1952__125_160305,
     author = {T. Kato},
     title = {Notes on {Some} {Inequalities} for {Linear} {Operators.}},
     journal = {Mathematische Annalen},
     pages = {208--212},
     publisher = {mathdoc},
     volume = {125},
     year = {1952},
     zbl = {0048.35301},
     url = {http://geodesic.mathdoc.fr/item/MAN_1952__125_160305/}
}