@article{ASENS_1905_3_22__539_0,
     author = {Davidoglou, A.},
     title = {\'Etude de l{\textquoteright}\'equation diff\'erentielle ${d^2[\theta (x){d^2y\over dx^2}]\over dx^2}=k\phi (x)y$},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {539--565},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 22},
     year = {1905},
     doi = {10.24033/asens.560},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.560/}
}