@article{ASENS_2013_4_46_1_57_0,
     author = {Usher, Michael},
     title = {Hofer's metrics and boundary depth},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {57--129},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {Ser. 4, 46},
     number = {1},
     year = {2013},
     doi = {10.24033/asens.2185},
     zbl = {1271.53076},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/asens.2185/}
}