Modern citation metrics have been around since the 1960s, but before the advent of Internet -
based citation databases, they weren't nearly as useful as they are today.
Not exact matches
I happened upon an article by Hawaii information science professor Peter Jasco, «As We May Search» [pdf][Current Science 89 (9), 2005, p. 1537] in which he compares aspects of Google Scholar, Scopus and the Web of Science, as
citation -
based and - enhanced
databases.
Prior to 2010, the Reflex
database was updated manually
based on reporter
citations for cases published in several commonly - used case reporters, as well as neutral
citations.