@article{1103044604, author = {Brownell, F. H.}, title = {Flows and noncommuting projections on Hilbert space.}, journal = {Pacific J. Math.}, volume = {5}, number = {4}, year = {1955}, pages = { 1-16}, language = {en}, url = {http://dml.mathdoc.fr/item/1103044604} }
Brownell, F. H. Flows and noncommuting projections on Hilbert space.. Pacific J. Math., Tome 5 (1955) no. 4, pp. 1-16. http://gdmltest.u-ga.fr/item/1103044604/