@article{1103839849, author = {Grossmann, A.}, title = {Homomorphisms and direct sums of nested Hilbert spaces}, journal = {Comm. Math. Phys.}, volume = {4}, number = {1}, year = {1967}, pages = { 190-202}, language = {en}, url = {http://dml.mathdoc.fr/item/1103839849} }
Grossmann, A. Homomorphisms and direct sums of nested Hilbert spaces. Comm. Math. Phys., Tome 4 (1967) no. 1, pp. 190-202. http://gdmltest.u-ga.fr/item/1103839849/