@article{ETNA_2009__35__a8,
     author = {Frommer, Andreas},
     title = {Monotone convergence of the {Lanczos} approximations to matrix functions of {Hermitian} matrices},
     journal = {Electronic transactions on numerical analysis},
     pages = {118--128},
     publisher = {mathdoc},
     volume = {35},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2009__35__a8/}
}