@article{MOMA_1991__111_1_178508,
     author = {Jouni Luukkainen},
     title = {Bi-Lipschitz {Concordance} {Implies} {Bi-Lipschitz} {Isotopy.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {35--46},
     publisher = {mathdoc},
     volume = {111},
     number = {1},
     year = {1991},
     zbl = {0719.30013},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1991__111_1_178508/}
}