@article{etna_vol28_pp206-222, author = {M. Afanasjew and M. Eiermann and O. G. Ernst and S. G\"uttel}, title = {A generalization of the steepest descent method for matrix functions}, journal = {Electron. Trans. Numer. Anal.}, volume = {28}, year = {2007-2008}, pages = {206--222}, }