T. Aberra, S. Armfield, M. Behnia, und G. McBain. Flow Dynamics, Volume 832 von Conference Proceedings, Seite 456--460. American Instiute of Physics, (2006)
H. Daynes. Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934), 97 (685):
286--307(01.06.1920)