@article{GDZPPN002212617, title = {Sums of two k th powers.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {468}, year = {1995}, pages = {57-68}, zbl = {0820.11059}, url = {http://dml.mathdoc.fr/item/GDZPPN002212617} }
Skinner, C.M.; Wooley, T.D. Sums of two k th powers.. Journal für die reine und angewandte Mathematik, Tome 468 (1995) pp. 57-68. http://gdmltest.u-ga.fr/item/GDZPPN002212617/