By Tyssedal John   Niemi Ranveig   in Journal of Computational and Graphical Statistics

ISSN:1061-8600|23|3|678-699

Taylor & Francis Ltd‎(2014)‎

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By Gynnild Vidar   Tyssedal John   Lorentzen Lisa   in International Journal of Science and Mathematics Education

ISSN:1571-0068|3|4|587-607

Springer Publishing Company ‎(2005)‎

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