@article{10_4007_annals_2003_157_433,
     author = {Tim D. Cochran and Kent E. Orr and Peter Teichner},
     title = {Knot concordance, {Whitney} towers and $L^2$-signatures},
     journal = {Annals of mathematics},
     pages = {433--519},
     publisher = {mathdoc},
     volume = {157},
     number = {2},
     year = {2003},
     doi = {10.4007/annals.2003.157.433},
     mrnumber = {1973052},
     zbl = {1044.57001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2003.157.433/}
}