@article{MAN_1971__195_162223,
     author = {Earl Berkson},
     title = {Prehermitian {Elements} and {B*-Algebras.}},
     journal = {Mathematische Annalen},
     pages = {192--198},
     publisher = {mathdoc},
     volume = {195},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MAN_1971__195_162223/}
}