%0 Journal Article %A Schulz-Baldes, Hermann %T $\Bbb Z_{2}$-indices and factorization properties of odd symmetric Fredholm operators %J Documenta mathematica %D 2015 %P 1481-1500 %V 20 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2015__20__a0/ %G en %F DOCMA_2015__20__a0