Molecular vortices In: Encyclopedia of Human Thermodynamics (EoHT), bezien 3 november 2010.
google.nl
books.google.nl
W.J.M. Rankine (1852). "On the Reconcentration of the Mechanical Energy of the Universe". In: The London, Edinburgh and Dublin philosophical magazine and journal of science, 1852, pag. 358-360.Op Google Books, ga naar pagina 359
wikisource.org
en.wikisource.org
Chisholm, Hugh, ed (1911). "Rankine, William John Macquorn". Encyclopædia Britannica (Eleventh ed.). Cambridge University Press.