@article{1270130489, author = {OSAKA, Hiroyuki}, title = {Positive Projections on $C^*$-Algebras}, journal = {Tokyo J. of Math.}, volume = {14}, number = {2}, year = {1991}, pages = { 73-83}, language = {en}, url = {http://dml.mathdoc.fr/item/1270130489} }
OSAKA, Hiroyuki. Positive Projections on $C^*$-Algebras. Tokyo J. of Math., Tome 14 (1991) no. 2, pp. 73-83. http://gdmltest.u-ga.fr/item/1270130489/