@article{JIS_2010__13_8_a1,
     author = {Griffiths, Martin},
     title = {Counting the regions in a regular drawing of kn,n},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {13},
     number = {8},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2010__13_8_a1/}
}