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Jacobson, M.J.: Learning with hypertext learning environments : theory, design, and research (1996)
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Tergan, S.-O.: Misleading theoretical assumptions in hypertext / hypermedia research (1997)
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Jacobson, M.J.: Learning with hypertext learning environments : theory, design, and research (1995)
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Savoy, J.: ¬A learning scheme for information retrieval in hypertext (1994)
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Angelides, M.C.: Developing hybrid intelligent tutoring and hypertext systems (1995)
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