@article{SDPP_1974-1975__16_1_A11_0,
     author = {Lagrange, Jean},
     title = {Nombres congruents et courbes elliptiques},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     note = {talk:16},
     pages = {1--17},
     publisher = {Secr\'etariat math\'ematique},
     volume = {16},
     number = {1},
     year = {1974-1975},
     mrnumber = {398973},
     zbl = {0328.10013},
     language = {fr},
     url = {http://www.numdam.org/item/SDPP_1974-1975__16_1_A11_0/}
}