@article{10_4171_ggd_167,
     author = {Yago Antol{\'\i}n and Laura Ciobanu and No\`elia Viles},
     title = {On the asymptotics of visible elements and homogeneous equations in surface groups},
     journal = {Groups, geometry, and dynamics},
     pages = {619--638},
     year = {2012},
     volume = {6},
     number = {4},
     doi = {10.4171/ggd/167},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/167/}
}