Petrunin, Anton (2008). "Arnold's problem on paper folding". Zadachi Sankt-peterburgskoj Matematicheskoj Olimpiady Shkol'nikov Po Matematike (in Russian). arXiv:1004.0545. Bibcode:2010arXiv1004.0545P.
Petrunin, Anton (2008). "Arnold's problem on paper folding". Zadachi Sankt-peterburgskoj Matematicheskoj Olimpiady Shkol'nikov Po Matematike (in Russian). arXiv:1004.0545. Bibcode:2010arXiv1004.0545P.
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Krat, Svetlana (2005). "4.3 Approximating Short Maps by PL-isometries and Arnold's "Can You Make Your Dollar Bigger" Problem". Approximation Problems in Length Geometry (Ph.D. thesis). Pennsylvania State University. pp. 94–118. ProQuest305145549. See especially Section 4.3.4, "A Short Map that Increases the Perimeter of a Rectangle", pp. 117–118.