@article{10_4064_ap_3_2_200_209,
     author = {Z. Opial},
     title = {Sur un syst\`eme d'in\'egalit\'es int\'egrales},
     journal = {Annales Polonici Mathematici},
     pages = {200--209},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1956},
     doi = {10.4064/ap-3-2-200-209},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-3-2-200-209/}
}