@article{10_4007_annals_2012_175_3_7,
     author = {Mark Andrea A. de Cataldo and Tam\'as Hausel and Luca Migliorini},
     title = {Topology of {Hitchin} systems and  {Hodge} theory of character varieties: the case $A_1$},
     journal = {Annals of mathematics},
     pages = {1329--1407},
     publisher = {mathdoc},
     volume = {175},
     number = {3},
     year = {2012},
     doi = {10.4007/annals.2012.175.3.7},
     mrnumber = {2912707},
     zbl = {06051272},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2012.175.3.7/}
}