@article{SLC_1988_19_a16,
     author = {Germain Kreweras},
     title = {Une remarque sur le probl\`eme de {Steiner}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {19},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/SLC_1988_19_a16/}
}