@article{10_2140_agt_2013_13_795,
     author = {Brandenbursky, Michael and K\k{e}dra, Jarek},
     title = {On the autonomous metric on the group of area-preserving diffeomorphisms of the 2{\textendash}disc},
     journal = {Algebraic and Geometric Topology},
     pages = {795--816},
     year = {2013},
     volume = {13},
     number = {2},
     doi = {10.2140/agt.2013.13.795},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2013.13.795/}
}