@article{article, title = {{Document-retrieval Experiments Using Indexing Vocabularies of Varying Size. 1. Variety Generation symbols Assigned to the Fronts of Index Terms}}, publisher = {{Emerald Group Publishing Limited}}, url = {{}}, year = {{1979}}, month = {{1}}, author = {{Burnett JE and Cooper D and Lynch MF and Willett P and Wycherley M}}, doi = {{10.1108/eb026680}}, volume = {{35}}, journal = {{Journal of Documentation}}, issue = {{3}}, pages = {{197-206}}, note = {{Accessed on 2025/04/11}}}