@article{GT_2012_16_4_a12,
     author = {Chen, Dawei and M\"oller, Martin},
     title = {Nonvarying sums of {Lyapunov} exponents of {Abelian} differentials in low genus},
     journal = {Geometry & topology},
     pages = {2427--2479},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {2012},
     doi = {10.2140/gt.2012.16.2427},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2012.16.2427/}
}