@article{10_4064_fm_143_1_1_9, author = {Hossein Movahedi-Lankarani }, title = {An invariant of {bi-Lipschitz} maps}, journal = {Fundamenta Mathematicae}, pages = {1--9}, publisher = {mathdoc}, volume = {143}, number = {1}, year = {1993}, doi = {10.4064/fm-143-1-1-9}, language = {de}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-143-1-1-9/} }