@article{ASENS_1936_3_53__309_0,
     author = {Leimanis, Eug\`ene},
     title = {Sur les multiplicit\'es singuli\`eres d'un syst\`eme diff\'erentiel r\'eel},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {309--327},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 53},
     year = {1936},
     doi = {10.24033/asens.859},
     zbl = {0016.02401},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/asens.859/}
}