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Jacobson, M.J.: Learning with hypertext learning environments : theory, design, and research (1995)
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- Journal of educational multimedia and hypermedia. 4(1995) no.4, S.321-364
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Jacobson, M.J.: Learning with hypertext learning environments : theory, design, and research (1996)
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- Journal of educational multimedia and hypermedia. 5(1996) nos.3/4, S.239-281