Hohn, Tiina, and Andy Liu. “Polyomino Dissections.” Martin Gardner in the Twenty-First Century, edited by Michael Henle and Brian Hopkins, 1st ed., Mathematical Association of America, 2012, pp. 135–142, www.jstor.org/stable/10.4169/j.ctt13x0ng0.21. Accessed 8 Mar. 2021.
Hohn, T., & Andy Liu. (2012). Polyomino Dissections. In Henle M. & Hopkins B. (Eds.), Martin Gardner in the Twenty-First Century (pp. 135-142). Mathematical Association of America. Retrieved March 8, 2021, from http://www.jstor.org/stable/10.4169/j.ctt13x0ng0.21
Hohn, Tiina, and Andy Liu. "Polyomino Dissections." In Martin Gardner in the Twenty-First Century, edited by Henle Michael and Hopkins Brian, 135-42. Mathematical Association of America, 2012. Accessed March 8, 2021. http://www.jstor.org/stable/10.4169/j.ctt13x0ng0.21.
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