@article{GDZPPN00245243X, title = {On the Inequality ...pi f(pi) \> piif(qi).}, journal = {Metrika}, volume = {19}, year = {1972}, pages = {199-208}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN00245243X} }
Fischer, P. On the Inequality ...pi f(pi) > piif(qi).. Metrika, Tome 19 (1972) pp. 199-208. http://gdmltest.u-ga.fr/item/GDZPPN00245243X/