@article{MZ_1978__162_172722,
     author = {Brian Thorpe},
     title = {An {Extension} of {Cauchy's} {Criterion} to {N\"orlund} {Summability.}},
     journal = {Mathematische Zeitschrift},
     pages = {139--144},
     publisher = {mathdoc},
     volume = {162},
     year = {1978},
     zbl = {0367.40004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__162_172722/}
}