@article{1103857673,
author = {Wehrl, A.},
title = {Spin waves and the BCS model},
journal = {Comm. Math. Phys.},
volume = {20},
number = {1},
year = {1971},
pages = { 319-342},
language = {en},
url = {http://dml.mathdoc.fr/item/1103857673}
}
Wehrl, A. Spin waves and the BCS model. Comm. Math. Phys., Tome 20 (1971) no. 1, pp. 319-342. http://gdmltest.u-ga.fr/item/1103857673/