@article{MZ_1969__109_171132,
     author = {T. Ando},
     title = {Banachverb\"ande und positive {Projektionen.}},
     journal = {Mathematische Zeitschrift},
     pages = {121--130},
     publisher = {mathdoc},
     volume = {109},
     year = {1969},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1969__109_171132/}
}