Inside SISSA Discovery Service (main web pages of SISSA Library) , EBSCO has recently inserted on the bottom to the titles list a new product called PlumX Metrix - this product delivers a more complete picture of research and answers questions about research impact for great part of journals articles and books (including e-books) indexed in SISSA Discovery Service. This useful metrix information is addressed to researchers, librarians, administrators, and funders. PlumX, named Library Journal’s most ambitious database in 2013, gathers metrics across five categories—usage, mentions, captures, social media and citations. Metrics are gathered around what Plum Analytics calls artifacts—more than just the journal articles that a researcher authors may access or consult. PlumX Metrix gives explicit information about where the citations come from.