52 citations · 80 across the 10 of their papers we have counts for
1 paper · 1 filter
Geraldo Cesar Goncalves Ferreira, Sylvie Oliffson Kamphorst, Sonia Pinto-de-Carvalho
Sufficiently differentiable oval billiards always have invariant rotational curves, but there are only two types of ovals with an invariant horizontal circle in its phase-space: th…