@article{10_4153_CMB_1969_100_2,
     author = {Sauer, N. and Sch\"onheim, J.},
     title = {Maximal {Subsets} of a given {Set} having {No} {Triple} in {Common} with a {Steiner} {Triple} {System} on the set},
     journal = {Canadian mathematical bulletin},
     pages = {777--778},
     year = {1969},
     volume = {12},
     number = {6},
     doi = {10.4153/CMB-1969-100-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-100-2/}
}