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@article{AIHPA_1979__31_1_1_0, author = {Demoen, Bart}, title = {Coherent and quasi-free states}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {1--4}, publisher = {Gauthier-Villars}, volume = {31}, number = {1}, year = {1979}, mrnumber = {557048}, zbl = {0434.46043}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1979__31_1_1_0/} }
Demoen, Bart. Coherent and quasi-free states. Annales de l'I.H.P. Physique théorique, Tome 31 (1979) no. 1, pp. 1-4. http://geodesic.mathdoc.fr/item/AIHPA_1979__31_1_1_0/