@article{DCG_1993__9_2_131244,
     author = {J. Csima and E.T. Sawyer},
     title = {There {Exist} 6n/13 {Ordinary} {Points.}},
     journal = {Discrete & computational geometry},
     pages = {187--202},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1993},
     zbl = {0771.52003},
     url = {http://geodesic.mathdoc.fr/item/DCG_1993__9_2_131244/}
}