@article{BSMF_1971__99__259_0,
     author = {Sakai, S.},
     title = {Derivations of simple $C^\ast $-algebras. {II}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {259--263},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {99},
     year = {1971},
     doi = {10.24033/bsmf.1719},
     mrnumber = {45 #2491},
     zbl = {0216.41401},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1719/}
}