@article{SEDP_1994-1995____A19_0,
     author = {Weder, R.},
     title = {The inverse $N$-body problem. {A} geometrical approach},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:19},
     pages = {1--7},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1994-1995},
     mrnumber = {1362567},
     language = {en},
     url = {http://archive.numdam.org/item/SEDP_1994-1995____A19_0/}
}