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  1. Fishman, D.L.: Managing the virtual reference desk : how to plan an effective reference e-mail system (1998) 10.05
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  2. Bayer, M.: Keine E-Mail soll mehr unbemerkt am FBI vorbeikommen : Die US-Bundespolizei will Abhör-Computer direkt bei den Internet-Anbietern aufbauen - Datenschützer fürchten Missbrauch (2000) 10.05
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  3. Sixtus, M.: Schlüssel gegen Spam : Yahoo macht seine Technik öffentlich, die gefälschte Mails erkennt - in Hoffnung dass sie zum Standard wird (2004) 10.05
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  4. Goodman, J.; Heckerman, D.; Rounthwaite, R.: Schutzwälle gegen Spam (2005) 10.05
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