Lorenz-like attractors in nonholonomic models of Celtic stone
  We study chaotic dynamics in nonholonomic model of Celtic stone. We show that, for certain values of parameters characterizing geometrical and physical properties of the stone, a strange Lorenz-like attractor is observed in the model. We study also bifurcation scenarios for appearance and break-down of this attractor. 
A.S. Gonchenko and S.V. Gonchenko
math.DS