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Beall, J.; Kafadar, K.: ¬The effectiveness of copy cotaloging at eliminating typographical errors in shared bibliographic records (2004)
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Zakaria, M.S.: Measuring typographical errors in online catalogs of academic libraries using Ballard's list : a case study from Egypt (2023)
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Ballard, T.: Spelling and typographical errors in library databases (1992)
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Beall, J.; Kafadar, K.: Measuring typographical errors' impact on retrieval in bibliographic databases (2007)
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Ojala, M.: Troubleshooting your search : whatever can go wrong, will go wrong (1995)
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