@article{MZ_1966__91_170519,
     author = {Togo Nishiura and Daniel Waterman},
     title = {On the {Convergence} of {Multiple} {Power} {Series.}},
     journal = {Mathematische Zeitschrift},
     pages = {277--279},
     publisher = {mathdoc},
     volume = {91},
     year = {1966},
     zbl = {0154.08305},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__91_170519/}
}