On Sums Involving Fourier Coefficients of Maass Forms for   $\mathrm{SL}(3,\mathbb Z)$
  We derive a truncated Voronoi identity for rationally additively twisted sums of Fourier coefficients of Maass forms for $\mathrm{SL}(3,\mathbb Z)$, and as an application obtain a pointwise estimate and a second moment estimate for the sums in question. 
Jesse J\"a\"asaari, Esa V. Vesalainen
math.NT