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Kozma, R.B.: Learning with media (1991)
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Hammond, N.: Tailoring hypertext for the learner (1991)
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Duffy, T.M.; Knuth, R.A.: Hypermedia and instruction : where is the match? (1990)
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Leggett, J.J.; Schnase, J.L.; Kacmar, C.J.: Hypertext for learning (1990)
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Jonassen, D.H.; Grabinger, R.S.: Problems and issues in designing hypertext/hypermedia for learning (1990)
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