Heeffer, Albrecht. Submitted. “On The Interpretation Of Early Italian Bartering Problems”.

Heeffer, Albrecht. 2011. “On The Curious Historical Coincidence Of Algebra And Double-Entry Bookkeeping” Karen François, Löwe, Benedikt, Müller, Thomas, and Van Kerkhove, Bart. Foundations of the formal sciences VII : bringing together philosophy and sociology of science 32: 109–130. http://www.collegepublications.co.uk/logic/?00021.

Heeffer, Albrecht. 2008. “An Introduction To Wasan, Native Japanese Mathematics”. History and Pedagogy of Mathematics 68: 20–24. http://dx.doi.org/1854/11413.

Heeffer, Albrecht. 2008. “Regiomontanus And Chinese Mathematics” Erik Weber. PHILOSOPHICA 82: 87–114.

Heeffer, Albrecht. 2006. “Van Precepten Tot Vergelijkingen. De Conceptuele Ontwikkeling Van Symbolische Algebra In De Zestiende Eeuw”.

Heeffer, Albrecht. 2011. “Hypocrisie Binnen De Wiskunde?”. Wiskunde & onderwijs 148: 306–315.

Heeffer, Albrecht. 2010. “The Symbolic Model For Algebra: Functions And Mechanisms” Lorenzo Magnani, Carnielli, Walter A, and Pizzi, Claudio. Model-Based Reasoning in Science and Technology 314: 519–532. http://dx.doi.org/10.1007/978-3-642-15223-8\_29.

Heeffer, Albrecht. 2007. “Mathematics Education Through Lesson Study In The Asia-Pacific Region”. History and Pedagogy of Mathematics Newsletter 66: 4–6.

Heeffer, Albrecht. In Press. “Dutch Algebra And Arithmetic In Japan Before The Meiji Restoration” I.M. Vandoulakis and Dun, Liu. Navigating across Mathematical Cultures and Times: Exploring the Diversity of Discoveries and Proofs.

Heeffer, Albrecht, and Maarten Van Dyck. 2010. 26 Studies in Logic Philosophical Aspects Of Symbolic Reasoning In Early Modern Mathematics. College Publications.

Heeffer, Albrecht. 2007. “Learning Concepts Through The History Of Mathematics: The Case Of Symbolic Algebra.” Karen François and Van Bendegem, Jean Paul. Philosophical dimensions in mathematics education: 83–103.

Heeffer, Albrecht. 2009. “The Abbacus Tradition: The Missing Link Between Arabic And Early Symbolic Algebra?”.

Heeffer, Albrecht. 2009. “On The Nature And Origin Of Algebraic Symbolism”. In New Perspectives on Mathematical Practices. Essays in Philosophy and History of Mathematics., New Perspectives on Mathematical Practices. Essays in Philosophy and History of Mathematics., Bart Van Kerkhove. World Scientific Publishing. http://www.worldscibooks.com/etextbook/6810/6810\_chap01.pdf.

Heeffer, Albrecht. 2006. “The Logic Of Disguise: Descartes' Discovery Of The Sine Law”. Historia scientiarum. International Journal of the History of Science Society of Japan 16: 144–165.

Heeffer, Albrecht. 2011. “Historical Objections Against The Number Line”. Science and Education 20: 863–880.

Heeffer, Albrecht. 2010. “Estienne De La Roche’S Appropriation Of Chuquet (1484)”. In 3rd International Conference of the European Society for the History of Science, 3rd International Conference of the European Society for the History of Science, Hermann Hunger.

Heeffer, Albrecht. 2007. “Father Henri Bosmans (S.j.) A Belgian Pioneer In The History Of Mathematics”. History and Pedagogy of Mathematics Newsletter 65: 12–15.

Heeffer, Albrecht. 2010. “The Reception Of Ancient Indian Mathematics By Western Historians” B.S. Yadav and Mohan, Man. Ancient Indian Leaps into Mathematics: 135–152.

Heeffer, Albrecht. 2006. “The Methodological Relevance Of The History Of Mathematics For Mathematics Education”. In Proceedings of the International Conference on 21st Century Information Technology in Mathematics Education, Proceedings of the International Conference on 21st Century Information Technology in Mathematics Education, G Dhompongsa, Bhatti, F, and Kitson, Q.

Heeffer, Albrecht. 2009. “The Abbaco Tradition (1300-1500): Its Role In The Development Of European Algebra”. Suuri Kaiseki Kenkyuujo koukyuuroku 1625: 23–33.

Heeffer, Albrecht. 2008. “Negative Numbers As An Epistemic Difficult Concept. Some Lessons From History.”. In History and Pedagogy of Mathematics. Satellite Meeting of International Congress on Mathematical Education 11, 14 - 18 July 2008., History and Pedagogy of Mathematics. Satellite Meeting of International Congress on Mathematical Education 11, 14 - 18 July 2008., C. Tzanakis. Centro Cultural del México Contemporanéo.

Heeffer, Albrecht. 2006. “The Origin Of The Problems In Euler's Algebra”. Bulletin of the Belgian Mathematical Society - Simon Stevin 13: 949–952.

Heeffer, Albrecht. 2014. “Epistemic Justification And Operational Symbolism”. Foundations of science 19: 89–113.

Heeffer, Albrecht. 2010. “From The Second Unknown To The Symbolic Equation” Albrecht Heeffer and Van Dyck, Maarten. Philosophical Aspects of Symbolic Reasoning in Early Modern Mathematics 26: 57–102.

Heeffer, Albrecht. 2008. “Text Production, Reproduction And Appropriation Within The Abbaco Tradition: A Case Study”. SCIAMVS 9: 101-145.