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2. American Mathematical Society (n.d.). Summer math camps and programs for students. http://www.ams.org/programs/students/emp-mathcamps.
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4. Australian Mathematics Trust (1988). c. Mathematics competitions 1.1. https://sites.google.com/site/pjt154/home/a4-life-tributes/greitzer. Accessed June 2021.
5. Beilinson, A. (2016). I.M. Gelfand and his Seminar—a presence. Notices of the American Mathematical Society, 63(3), 295–298. https://doi.org/10.1090/noti1337