@article{MZ_1967__96_170684,
     author = {D.L. Prullage},
     title = {Summability in {Topological} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {259--278},
     year = {1967},
     volume = {96},
     zbl = {0142.02401},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__96_170684/}
}