@article{MZ_1974__139_172121, author = {Abraham Ziv}, title = {A {Non-Equivalence} {Theorem} for {Power} {Methods} of {Limitation.}}, journal = {Mathematische Zeitschrift}, pages = {199--204}, publisher = {mathdoc}, volume = {139}, year = {1974}, zbl = {0275.40007}, url = {http://geodesic.mathdoc.fr/item/MZ_1974__139_172121/} }