@article{JEDP_1991____A16_0,
     author = {Isozaki, Hiroshi},
     title = {Structure of {S-matrices} for three body {Schr\"odinger} operators},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {16},
     pages = {1--7},
     publisher = {Ecole polytechnique},
     year = {1991},
     zbl = {0738.35051},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1991____A16_0/}
}