@article{1077476582, author = {Schweitzer, M.}, title = {The partial sums of second order of the geometric series}, journal = {Duke Math. J.}, volume = {18}, number = {1}, year = {1951}, pages = { 527-533}, language = {en}, url = {http://dml.mathdoc.fr/item/1077476582} }
Schweitzer, M. The partial sums of second order of the geometric series. Duke Math. J., Tome 18 (1951) no. 1, pp. 527-533. http://gdmltest.u-ga.fr/item/1077476582/