@article{BSMF_1924__52__610_0,
     author = {Hadamard, J.},
     title = {Le principe de {Huygens}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {610--640},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {52},
     year = {1924},
     doi = {10.24033/bsmf.1076},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1076/}
}