Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
David Wilkinson, Pardeep Sud, Mike Thelwall. Substance without citation: evaluating the online impact of grey literature. Scientometrics, 98(2):797-806, 2014. [doi]
Abstract is missing.