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H. K. Moffatt, ''Talk for the 50th anniversary of the Journal of Fluid Mechanics'', Cambridge, 21 July 2006.
A. B. Pippard, [http://www.iop.org/EJ/abstract/0143-0807/11/1/112 How to make a celt or rattleback], ''Eur. J. Phys.'' 11:1, 63-64, 1990. (The rattleback is made with a part of a glass wine bottle and a metal bar fixed at a small angle to the rolling axis)
Allan J. Boardman,The Mysterious Celt, ''Fine Woodworking'', July/August 1985
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