@article{10_4064_sm189_1_2,
     author = {Shulong Li and Lixin Liu},
     title = {Geometric characterization for
 homeomorphisms between disks},
     journal = {Studia Mathematica},
     pages = {13--25},
     year = {2008},
     volume = {189},
     number = {1},
     doi = {10.4064/sm189-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm189-1-2/}
}