Please see https://youtu.be/XvhiGkuXpH8?si=53pkZrrfjGsEIJdE. A bit long, but worth watching. Please listen to especially the presentation of Prof. Ludo Waltman of CWTS, University of Leiden. Thankfully the video provides the transcript. With warm regards, Arun http://orcid.org/0000-0002-4398-4658 http://www.researcherid.com/rid/B-9925-2009