@article{10_1090_S0894_0347_02_00417_4,
     author = {Hausel, Tam\~A{\textexclamdown}s and Thaddeus, Michael},
     title = {Relations in the cohomology ring of the moduli space of rank 2 {Higgs} bundles},
     journal = {Journal of the American Mathematical Society},
     pages = {303--329},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2003},
     doi = {10.1090/S0894-0347-02-00417-4},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-02-00417-4/}
}