1. Subject trends in library and information science research: 1975–1984;Atkins;Library Trends,1988
2. Scientometric indicators: A 32-country comparative evaluation of publishing performance and citation impact;Braun,1985
3. Documentation notes: Sources of citations and references for analysis purposes;Brittain;Journal of Documentation,1973
4. The half-life of some scientific and technical literature;Burton;American Documentation,1960