SDN Members don't see this ad. (About Ads) Does anyone know of an electronic database that allows for sorting by the # of times an article has been referenced? I could have sworn at least one of the electronic databases allows for this, but I haven't been able to remember which one(s). As an aside, I'd love to be able to sort results by the impact factor (mostly out of curiousity), though I highly doubt that is doable. Anyone want to take on a fun project?!