@article{10_4064_sm190_2_7,
     author = {Tsiu-Kwen Lee and Cheng-Kai Liu},
     title = {Partially defined $\sigma $-derivations on
 semisimple {Banach} algebras},
     journal = {Studia Mathematica},
     pages = {193--202},
     year = {2009},
     volume = {190},
     number = {2},
     doi = {10.4064/sm190-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm190-2-7/}
}