%0 Journal Article %A Kan Jiahai %T Lower and upper bounds for the number of solutions of $p + h = P_{r}$ %J Acta Arithmetica %D 1990 %P 237-248 %V 56 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-56-3-237-248/ %R 10.4064/aa-56-3-237-248 %G en %F 10_4064_aa_56_3_237_248