@article{1104202736,
author = {Freudenberg, Wolfgang},
title = {Characterization of states of infinite boson systems. II. On the existence of the conditional reduced density matrix},
journal = {Comm. Math. Phys.},
volume = {135},
number = {2},
year = {1991},
pages = { 461-472},
language = {en},
url = {http://dml.mathdoc.fr/item/1104202736}
}
Freudenberg, Wolfgang. Characterization of states of infinite boson systems. II. On the existence of the conditional reduced density matrix. Comm. Math. Phys., Tome 135 (1991) no. 2, pp. 461-472. http://gdmltest.u-ga.fr/item/1104202736/