@article{10_1090_S0894_0347_06_00527_3,
     author = {DeMarco, Laura},
     title = {The moduli space of quadratic rational maps},
     journal = {Journal of the American Mathematical Society},
     pages = {321--355},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2007},
     doi = {10.1090/S0894-0347-06-00527-3},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-06-00527-3/}
}