@article{GDZPPN002208318, title = {On the number of solutions of N - p = Pr.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {416}, year = {1991}, pages = {117-130}, zbl = {0702.11065}, url = {http://dml.mathdoc.fr/item/GDZPPN002208318} }
Kan, Jiahai. On the number of solutions of N - p = Pr.. Journal für die reine und angewandte Mathematik, Tome 416 (1991) pp. 117-130. http://gdmltest.u-ga.fr/item/GDZPPN002208318/