@article{ASENS_1943_3_60__35_0,
     author = {Haag, Jules},
     title = {\'Etude asymptotique des oscillations de relaxation},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 60},
     year = {1943},
     pages = {35-64},
     doi = {10.24033/asens.903},
     zbl = {0061.19107},
     mrnumber = {7,299c},
     language = {fr},
     url = {http://www.numdam.org/item/ASENS_1943_3_60__35_0}
}

Haag, Jules. Étude asymptotique des oscillations de relaxation. Annales scientifiques de l'École Normale Supérieure, Serie 3, Volume 60 (1943) , pp. 35-64. doi : 10.24033/asens.903. http://www.numdam.org/item/ASENS_1943_3_60__35_0/