@article{GDZPPN00208242X, title = {An integral recurrence for sums of powers.}, journal = {Elemente der Mathematik}, volume = {45}, year = {1990}, pages = {21-23}, zbl = {0714.11013}, url = {http://dml.mathdoc.fr/item/GDZPPN00208242X} }
Gunther, G. An integral recurrence for sums of powers.. Elemente der Mathematik, Tome 45 (1990) pp. 21-23. http://gdmltest.u-ga.fr/item/GDZPPN00208242X/