@misc{RO_1968__2_1_112_0,
     title = {Lettre \`a la r\'edaction},
     journal = {Revue fran\c{c}aise d'informatique et de recherche op\'erationnelle. S\'erie verte},
     pages = {112--113},
     publisher = {EDP-Sciences},
     volume = {2},
     number = {V1},
     year = {1968},
     language = {fr},
     url = {http://www.numdam.org/item/RO_1968__2_1_112_0/}
}