@article{AIHPA_1990__52_3_237_0,
     author = {Buchholz, Detlev and Porrmann, Martin},
     title = {How small is the phase space in quantum field theory ?},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {237--257},
     publisher = {Gauthier-Villars},
     volume = {52},
     number = {3},
     year = {1990},
     mrnumber = {1057446},
     zbl = {0719.46044},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1990__52_3_237_0/}
}