@article{10_2140_agt_2004_4_893,
     author = {Friedl, Stefan},
     title = {Eta invariants as sliceness obstructions and their relation to {Casson{\textendash}Gordon} invariants},
     journal = {Algebraic and Geometric Topology},
     pages = {893--934},
     year = {2004},
     volume = {4},
     number = {2},
     doi = {10.2140/agt.2004.4.893},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2004.4.893/}
}