@article{JMPA_1911_6_7__317_0,
     author = {Boussinesq, J.},
     title = {Contribution \`a l'optique cristalline},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {317--348},
     publisher = {Gauthier-Villars},
     volume = {6e s{\'e}rie, 7},
     year = {1911},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1911_6_7__317_0/}
}