@article{AIHPA_1997__67_1_91_0,
     author = {Graf, Gian Michele and Schenker, Daniel},
     title = {2-magnon scattering in the {Heisenberg} model},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {91--107},
     publisher = {Gauthier-Villars},
     volume = {67},
     number = {1},
     year = {1997},
     mrnumber = {1463007},
     zbl = {0879.47043},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1997__67_1_91_0/}
}