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Losee, R.M.: Comparing Boolean and probabilistic information retrieval systems across queries and disciplines (1997)
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Pfeifer, U.; Fuhr, N.; Huynh, T.: Searching structured documents with the enhanced retrieval functionality of freeWAIS-sf and SFgate (1995)
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Frické, M.: Boolean logic (2021)
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Wartik, S.; Fox, E.; Heath, L.; Chen, Q.-F.: Hashing algorithms (1992)
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Topi, H.; Lucas, W.: Mix and match : combining terms and operators for successful Web searches (2005)
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