On Vinogradov's estimate of trigonometric sums and the Goldbach-Vinogradov theorem Stephen Wainger (1971) Mémoires de la Société Mathématique de France
On Waring's problem (elementary methods). Nesterenko, Yu.V. (2005) Journal of Mathematical Sciences (New York)
On Waring's problem for two squares and three cubes. Christopher Hooley (1981) Journal für die reine und angewandte Mathematik
On weighted densities Rita Giuliano-Antonini, Georges Grekos, Ladislav Mišík (2007) Czechoslovak Mathematical Journal The continuity of densities given by the weight functions n α , α ∈ [ - 1 , ∞ [ , with respect to the parameter α is investigated.