Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1968__18_2_a0, author = {Wiegold, James}, title = {Periodic {Series}}, journal = {Mathematica slovaca}, pages = {81--82}, publisher = {mathdoc}, volume = {18}, number = {2}, year = {1968}, mrnumber = {0237653}, zbl = {0159.30603}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1968__18_2_a0/} }
Wiegold, James. Periodic Series. Mathematica slovaca, Tome 18 (1968) no. 2, pp. 81-82. http://geodesic.mathdoc.fr/item/MASLO_1968__18_2_a0/