@article{10_4064_sm_129_1_59_65,
     author = {Gerd Herzog and  },
     title = {On quasipositive elements in ordered {Banach} algebras},
     journal = {Studia Mathematica},
     pages = {59--65},
     publisher = {mathdoc},
     volume = {129},
     number = {1},
     year = {1998},
     doi = {10.4064/sm-129-1-59-65},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-129-1-59-65/}
}