@article{MAN_1969__183_161901,
     author = {J.G. STAMPFLI},
     title = {On {Hyponormal} and {Toeplitz} {Operators.}},
     journal = {Mathematische Annalen},
     pages = {328--336},
     publisher = {mathdoc},
     volume = {183},
     year = {1969},
     zbl = {0175.43104},
     url = {http://geodesic.mathdoc.fr/item/MAN_1969__183_161901/}
}