@article{1103840803,
author = {Manuceau, J. and Verbeure, A.},
title = {Quasi-free states of the ${\rm C.C.R.}$---algebra and Bogoliubov transformations},
journal = {Comm. Math. Phys.},
volume = {7},
number = {1},
year = {1968},
pages = { 293-302},
language = {en},
url = {http://dml.mathdoc.fr/item/1103840803}
}
Manuceau, J.; Verbeure, A. Quasi-free states of the ${\rm C.C.R.}$---algebra and Bogoliubov transformations. Comm. Math. Phys., Tome 7 (1968) no. 1, pp. 293-302. http://gdmltest.u-ga.fr/item/1103840803/