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Scientometrics > 2019 > 121 > 3 > 1717-1736
IERI Procedia > 2012 > 3 > Complete > 206-212
Higher Education > 2011 > 62 > 5 > 593-606
Research Policy > 1998 > 26 > 6 > 625-641
Scientometrics > 2019 > 121 > 3 > 1717-1736
IERI Procedia > 2012 > 3 > Complete > 206-212
Higher Education > 2011 > 62 > 5 > 593-606
Research Policy > 1998 > 26 > 6 > 625-641