1. The history of comparative anatomy. Part I: A statistical analysis of the literature;F Cole;Science Progress,1917
2. College libraries and chemical education;PL Gross;Science,1927
3. The frequency distribution of scientific productivity;AJ Lotka;Journal of Washington Academy Sciences,1926
4. Human behavior and the principle of least effort;GK Zipf,1949
5. Sources of information on specific subjects;SC Bradford;Engineering,1934