%0 Journal Article %A Schmelzer, Thomas %A Trefethen, Lloyd N. %T Evaluating matrix functions for exponential integrators via Carathéodory-Fejér approximation and contour integrals %J Electronic transactions on numerical analysis %D 2008 %V 29 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2008__29__a13/ %G en %F ETNA_2008__29__a13