نظرية العقد (رياضيات): الفرق بين النسختين

* Thomson, Sir William (Lord Kelvin), ''[http://zapatopi.net/kelvin/papers/on_vortex_atoms.html On Vertex Atoms]'', Proceedings of the Royal Society of Edinburgh, Vol. VI, 1867, pp. 94–105.

* Silliman, Robert H., ''William Thomson: Smoke Rings and Nineteenth-Century Atomism'', Isis, Vol. 54, No. 4. (Dec., 1963), pp. 461–474. [http://links.jstor.org/sici?sici=0021-1753%28196312%2954%3A4%3C461%3AWTSRAN%3E2.0.CO%3B2-0 JSTOR link]

* [http://www.southalabama.edu/mathstat/personal_pages/silver/smoke%20rings.mpg Movie] of a modern recreation of Tait's smoke ring experiment