@article{AIHPA_1974__20_2_201_0,
     author = {Eckmann, J.-P. and Fr\"ohlich, J.},
     title = {Unitary equivalence of local algebras in the quasifree representation},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {201--209},
     publisher = {Gauthier-Villars},
     volume = {20},
     number = {2},
     year = {1974},
     mrnumber = {400966},
     zbl = {0287.46077},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1974__20_2_201_0/}
}