An alternative route is presented by P. Ganguly and N. F. van der Vegt, developed for correcting KBIs. The authors state that "excess (depletion) of particles of type m around particles of type l at a local scale is compensated by depletion (excess) of particles of type m at long distances, as the total number of particles is fixed." Based on this observation, the authors propose to correct the error in the ρ-normalization of the RDF by correcting the number N of particles throughout r: