@article{AIHPA_1999__70_1_1_0, author = {Narnhofer, H. and Thirring, W.}, title = {Spontaneously broken symmetries}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {1--21}, publisher = {Gauthier-Villars}, volume = {70}, number = {1}, year = {1999}, mrnumber = {1671208}, zbl = {0930.46062}, language = {en}, url = {http://www.numdam.org/item/AIHPA_1999__70_1_1_0/} }