%0 Journal Article %A Fegan, H. D. %T Second Order Operators with Non-Zero Eta Invariant %J Canadian mathematical bulletin %D 1992 %P 341-353 %V 35 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1992-046-0/ %R 10.4153/CMB-1992-046-0 %F 10_4153_CMB_1992_046_0