SNIP and SJR: Two New Journal Ranking Indicators from Elsevier

SNIP - Source Normalized Impact per Paper and SJR - are two new indicators provided by Elsevier based on the Scopus citation database. The indicators are available from the Journal Metrics website.SNIP takes into account citation practices in the field of interest. A journal's field is the journals citing that journal and the average length of reference lists in papers in that field are taken