@article{JIS_2004__7_1_a7,
     author = {Simons,  Christopher S. and Wright,  Marcus},
     title = {Zeroing the baseball indicator and the chirality of triples},
     journal = {Journal of integer sequences},
     year = {2004},
     volume = {7},
     number = {1},
     zbl = {1114.05300},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2004__7_1_a7/}
}