...interest in using citation indexes for retrieval and dissemination is equaled, if not exceeded, by the interest in its use for sociological and historical research. Indeed, Newell stated: ‘ ‘Ci-tation Indexing will generate a spate of empirical work on the sociology of sci- ence..., It is rather easy to predict, I think, that the publication and wide availability of an extensive citation in- dex will have strong social consequences along the line of becoming a controlling variable for the advancement and employment of scientific personnel . . . . It makes little difference whether one likes this or not.’