@article{700705,
     title = {On convergence in the space of summations},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {119-124},
     mrnumber = {MR0487951},
     zbl = {0397.28005},
     url = {http://dml.mathdoc.fr/item/700705}
}

Flachsmeyer, J.; Terpe, F. On convergence in the space of summations, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. 119-124. http://gdmltest.u-ga.fr/item/700705/