An inspection on the Borel masses relation used in QCD sum rules
  In this work, we studied the Borel masses relation used in QCDSR calculations. These masses are the parameters of the Borel transform used when the three point function is calculated. We analised an usual and a more general linear relations. We concluded that a general linear relation between these masses provides the best results regarding the standard deviation. 
B. Os\'orio Rodrigues, M.E. Bracco and M. Chiapparini
hep-ph