1. Test results on CACM collection;Fox,1983
2. Nonparametric statistical methods;Hollander,1973
3. Nonparametrics: Statistical methods based on ranks;Lehmann,1975
4. Relevance assessments and retrieval system evaluation;Lesk,1971
5. A field experimental approach to the study of relevance assessments in relation to document searching;Rees,1967