TY - JOUR AU - Fegan, H. D. TI - Second Order Operators with Non-Zero Eta Invariant JO - Canadian mathematical bulletin PY - 1992 SP - 341 EP - 353 VL - 35 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1992-046-0/ DO - 10.4153/CMB-1992-046-0 ID - 10_4153_CMB_1992_046_0 ER -