@article{700995,
     title = {Stability of Banach algebras},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Springer},
     address = {Berlin},
     year = {1977},
     pages = {109-114},
     mrnumber = {MR0458172},
     zbl = {0367.46046},
     url = {http://dml.mathdoc.fr/item/700995}
}

Johnson, B. E. Stability of Banach algebras, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. 109-114. http://gdmltest.u-ga.fr/item/700995/