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Beaudouin-Lafon, Michel (2004). "Designing interaction, not interfaces". Proceedings of the working conference on Advanced visual interfaces. pp. 15–22. doi:10.1145/989863.989865. ISBN1581138679. S2CID3395621.
McCrickard, D.S.; Catrambone, R. (1999). "Beyond the scrollbar: An evolution and evaluation of alternative navigation techniques". Proceedings 1999 IEEE Symposium on Visual Languages. pp. 270–277. doi:10.1109/VL.1999.795913. ISBN0-7695-0216-4. S2CID5715116.