@article{M2AN_1973__7_1_76_0,
     author = {Gaultier, Maurice},
     title = {Br\`eve communication. {Une} \'equation du second ordre},
     journal = {Revue fran\c{c}aise d'automatique informatique recherche op\'erationnelle. Math\'ematique},
     pages = {76--83},
     publisher = {Dunod},
     address = {Paris},
     volume = {7},
     number = {R1},
     year = {1973},
     mrnumber = {377622},
     zbl = {0261.35015},
     language = {fr},
     url = {http://www.numdam.org/item/M2AN_1973__7_1_76_0/}
}