%0 Journal Article %A Hermann Schulz-Baldes %T $\Bbb Z_{2}$-indices and factorization properties of odd symmetric Fredholm operators %J Documenta mathematica %D 2015 %P 1481-1500 %V 20 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/524/ %R 10.4171/dm/524 %F 10_4171_dm_524