@article{10_4171_ggd_384,
     author = {Mauro Artigiani and Luca Marchese and Corinna Ulcigrai},
     title = {The {Lagrange} spectrum of a {Veech} surface has a {Hall} ray},
     journal = {Groups, geometry, and dynamics},
     pages = {1287--1337},
     year = {2016},
     volume = {10},
     number = {4},
     doi = {10.4171/ggd/384},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/384/}
}