@article{1103043677, author = {Putnam, C. R.}, title = {Continuous spectra and unitary equivalence.}, journal = {Pacific J. Math.}, volume = {7}, number = {4}, year = {1957}, pages = { 993-995}, language = {en}, url = {http://dml.mathdoc.fr/item/1103043677} }
Putnam, C. R. Continuous spectra and unitary equivalence.. Pacific J. Math., Tome 7 (1957) no. 4, pp. 993-995. http://gdmltest.u-ga.fr/item/1103043677/