@article{EXMA_2006__15_4_226649,
     author = {Wilson, P.M.H.},
     title = {Some geometry and combinatorics for the -invariant of ternary cubics.},
     journal = {Experimental mathematics},
     pages = {479--490},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2006},
     zbl = {1172.14332},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2006__15_4_226649/}
}