@article{ASENS_1912_3_29__431_0,
     author = {Bernstein, Serge},
     title = {Sur les \'equations du calcul des variations},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {431--485},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 29},
     year = {1912},
     doi = {10.24033/asens.651},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/asens.651/}
}