@book{MSMF_1972__29__3_0, author = {Delaroche, Claire}, title = {Extensions des $C^\ast $-alg\`ebres}, series = {M\'emoires de la Soci\'et\'e Math\'ematique de France}, publisher = {Soci\'et\'e math\'ematique de France}, number = {29}, year = {1972}, doi = {10.24033/msmf.56}, zbl = {0248.46047}, mrnumber = {58 #30290}, language = {fr}, url = {http://archive.numdam.org/item/MSMF_1972__29__3_0/} }