@article{MAN_1958__135_160626,
     author = {M. Mahowald},
     title = {A {Summability} {Theorem} in {Countable} {Toral} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {354--359},
     publisher = {mathdoc},
     volume = {135},
     year = {1958},
     zbl = {0086.31904},
     url = {http://geodesic.mathdoc.fr/item/MAN_1958__135_160626/}
}