@article{AIHPA_1981__35_2_149_0, author = {Davies, E. B.}, title = {Symmetry breaking for molecular open systems}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {149--171}, publisher = {Gauthier-Villars}, volume = {35}, number = {2}, year = {1981}, mrnumber = {637240}, zbl = {0493.49040}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1981__35_2_149_0/} }