@article{1103858407,
author = {Lieb, Elliott H. and Robinson, Derek W.},
title = {The finite group velocity of quantum spin systems},
journal = {Comm. Math. Phys.},
volume = {24},
number = {2},
year = {1972},
pages = { 251-257},
language = {en},
url = {http://dml.mathdoc.fr/item/1103858407}
}
Lieb, Elliott H.; Robinson, Derek W. The finite group velocity of quantum spin systems. Comm. Math. Phys., Tome 24 (1972) no. 2, pp. 251-257. http://gdmltest.u-ga.fr/item/1103858407/