@article{1138039164, author = {Tohge, Kazuya}, title = {On a problem of Hinkkanen about Hadamard products}, journal = {Kodai Math. J.}, volume = {13}, number = {1}, year = {1990}, pages = { 101-120}, language = {en}, url = {http://dml.mathdoc.fr/item/1138039164} }
Tohge, Kazuya. On a problem of Hinkkanen about Hadamard products. Kodai Math. J., Tome 13 (1990) no. 1, pp. 101-120. http://gdmltest.u-ga.fr/item/1138039164/