@article{05626027, title = {A lower bound for the second moment of Schoenberg operator.}, journal = {General Mathematics}, volume = {16}, year = {2008}, pages = {165-170}, zbl = {1199.41043}, language = {en}, url = {http://dml.mathdoc.fr/item/05626027} }
Tachev, Gancho T. A lower bound for the second moment of Schoenberg operator.. General Mathematics, Tome 16 (2008) pp. 165-170. http://gdmltest.u-ga.fr/item/05626027/