Reys, Robert, Barbara Reys, and Jeffrey C. Shih. “Doctoral Preparation in Mathematics Education: Time for Research and a Widespread Professional Conversation”. Journal of Mathematics Education at Teachers College 10, no. 2 (December 14, 2019): 21–27. Accessed May 11, 2024. https://journals.library.columbia.edu/index.php/jmetc/article/view/4192.