@article{10_4153_CMB_1988_020_2,
     author = {Salamon, Peter and Erd\"os, Paul},
     title = {The {Solution} to a {Problem} of {Gr\"unbaum}},
     journal = {Canadian mathematical bulletin},
     pages = {129--138},
     year = {1988},
     volume = {31},
     number = {2},
     doi = {10.4153/CMB-1988-020-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-020-2/}
}