@article{RO_1968__2_3_91_0,
     author = {Berge, C.},
     title = {Probl\`emes plaisans et d\'electables},
     journal = {Revue fran\c{c}aise d'informatique et de recherche op\'erationnelle. S\'erie verte},
     pages = {91--92},
     year = {1968},
     publisher = {EDP Sciences},
     volume = {2},
     number = {V3},
     language = {fr},
     url = {https://www.numdam.org/item/RO_1968__2_3_91_0/}
}