@article{M2AN_1967__1_4_63_0,
     author = {Picard, Claude},
     title = {Sur un probl\`eme de pes\'ees},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {63--72},
     publisher = {Dunod},
     address = {Paris},
     volume = {1},
     number = {4},
     year = {1967},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1967__1_4_63_0/}
}