@article{10_1007_s10587_014_0081_1,
     author = {Chv\'atal, Va\v{s}ek},
     title = {A {De} {Bruijn-Erd\H{o}s} theorem for $1$-$2$ metric spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {45--51},
     publisher = {mathdoc},
     volume = {64},
     number = {1},
     year = {2014},
     doi = {10.1007/s10587-014-0081-1},
     mrnumber = {3247442},
     zbl = {06391474},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0081-1/}
}