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- [31] The cost-effectiveness of the article-processing-charge-funded model across countries in different scientific blocks: the case of Elsevier's hybrid open access journals INFORMATION RESEARCH-AN INTERNATIONAL ELECTRONIC JOURNAL, 2021, 26 (02):
- [33] Book Review: A common ground of mathematics and mathematics education for the classroom and for researchers. Erich Christian Wittmann (2021) Connecting mathematics and mathematics education. Collected papers on mathematics education as a design scienceSpringer. Open access publication https://link.springer.com/book/10.1007/978-3-030-61570-3. xx + 328 pp. Hardcover: ISBN 978-3-030-61569-7 51.99 €. eBook: ISBN 978-3-030-61570-3 Educational Studies in Mathematics, 2022, 111 (2) : 367 - 374