@article{AM2_1982__24_136939,
     author = {G.W. Wasilkowski},
     title = {The strength of nonstationary iteration.},
     journal = {Aequationes mathematicae},
     pages = {243--260},
     publisher = {mathdoc},
     volume = {24},
     year = {1982},
     zbl = {0543.65025},
     url = {http://geodesic.mathdoc.fr/item/AM2_1982__24_136939/}
}