@article{MAN_1973__201_162382,
     author = {J.R. Holub},
     title = {On the {Metric} {Geometry} of {Ideals} of {Operators} on {Hubert} {Space.}},
     journal = {Mathematische Annalen},
     pages = {157--164},
     publisher = {mathdoc},
     volume = {201},
     year = {1973},
     zbl = {0234.47045},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__201_162382/}
}