@article{MOMA_1984__98_178193,
     author = {P. Frankl and J. Pach and V. R\"odl},
     title = {How {To} {Build} a {Barricade.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {93--98},
     publisher = {mathdoc},
     volume = {98},
     year = {1984},
     zbl = {0542.52010},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1984__98_178193/}
}