@article{GT_2016_20_1_a7,
     author = {Burago, Dmitri and Ivanov, Sergei},
     title = {Boundary distance, lens maps and entropy of geodesic flows of {Finsler} metrics},
     journal = {Geometry & topology},
     pages = {469--490},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2016},
     doi = {10.2140/gt.2016.20.469},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2016.20.469/}
}