Descartes teckenregel (Swedish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Descartes teckenregel" in Swedish language version.

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1cut-the-knot.org

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cut-the-knot.org

Bogomolny, Alexander. ”Descartes' Rule of Signs”. www.cut-the-knot.org. https://www.cut-the-knot.org/fta/ROS2.shtml. Läst 20 januari 2018.

djm.cc

Smith, David Eugene; Marcia L. Latham (1954). Geometry of René Descartes. sid. 160. http://djm.cc/library/Geometry_of_Rene_Descartes_rev2.pdf. Läst 20 januari 2018

orbin.se

df.lth.se.orbin.se

”René Descartes - filosofi och matematik”. www.df.lth.se.orbin.se. http://www.df.lth.se.orbin.se/~mikaelb/ped/descartes/descartes.html. Läst 20 januari 2018.