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Bern, Marshall; Hayes, Barry (1996). „The complexity of flat origami”. Proceedings of the Seventh Annual ACM-SIAM Symposium on Discrete Algorithms (Atlanta, GA, 1996). ACM, New York. стр. 175—183. MR1381938.
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„2D Array”. Japan Aerospace Exploration Agency. Архивирано из оригинала 25. 11. 2005. г.CS1 одржавање: Формат датума (веза)
Korpal, Gaurish (25. 11. 2015). „Folding Paper in Half”. At Right Angles. Teachers of India. 4 (3): 20—23. Архивирано из оригинала 14. 11. 2016. г. Приступљено 10. 11. 2021.CS1 одржавање: Формат датума (веза)
Bern, Marshall; Hayes, Barry (1996). „The complexity of flat origami”. Proceedings of the Seventh Annual ACM-SIAM Symposium on Discrete Algorithms (Atlanta, GA, 1996). ACM, New York. стр. 175—183. MR1381938.