@article{AM2_1980__20_182397,
     author = {George J. Miel},
     title = {Cones and error bounds for linear iterations.},
     journal = {Aequationes mathematicae},
     pages = {170--183},
     publisher = {mathdoc},
     volume = {20},
     year = {1980},
     zbl = {0437.65056},
     url = {http://geodesic.mathdoc.fr/item/AM2_1980__20_182397/}
}