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Zulnaidi, Hutkemri and Oktavika, Enny and Hidayat, Riyan (2020) Effect of use of GeoGebra on achievement of high school mathematics students. Education and Information Technologies, 25 (1). pp. 51-72. ISSN 1360-2357, DOI https://doi.org/10.1007/s10639-019-09899-y.