%0 Journal Article %A Ajay C. Ramadoss %T Integration of Cocycles and Lefschetz Number Formulae for Differential Operators %J Symmetry, integrability and geometry: methods and applications %D 2011 %V 7 %U http://geodesic.mathdoc.fr/item/SIGMA_2011_7_a9/ %G en %F SIGMA_2011_7_a9