@article{PIM_2000_N_S_67_81_a7,
     author = {H.-J. Dobner},
     title = {Numerical {Bounds} for {Inverses} of {Linear} {Operators}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {85 },
     publisher = {mathdoc},
     volume = {_N_S_67},
     number = {81},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_2000_N_S_67_81_a7/}
}