"शंकु-परिच्छेद": अवतरणों में अंतर

* [httphttps://web.archive.org/web/20070715064142/http://mathdl.maa.org/convergence/1/?pa=content&sa=viewDocument&nodeId=196&bodyId=60 शांकवों की उत्पत्ति]

* [https://web.archive.org/web/20070927004324/http://xahlee.org/SpecialPlaneCurves_dir/ConicSections_dir/conicSections.html शांकव]

* [https://web.archive.org/web/20070608234144/http://math.fullerton.edu/mathews/n2003/ConicFitMod.html Determinants and Conic Section Curves]

* [https://web.archive.org/web/20060406010638/http://britton.disted.camosun.bc.ca/jbconics.htm प्रकृति में शांकवों की उपस्थिति]

* [https://web.archive.org/web/20071006174625/http://www.mathacademy.com/pr/prime/articles/conics/index.asp शांकव] - शांकवों पर एक सरल, स्पष्ट और सुबोध लेख