Marginal stability curves:
L=0.3, 0.3<S<1.5
L=0.5, 0.3<S<1.5, zooms: L=0.5, 0.4<S<0.7 and L=0.7, 0.3<S<1.5
L=0.56, 0.4<S<1.5
Frequencies at marginal stability points:
L=0.5, 0.3<S<1.5
Tangent Double Hopf bifurcation at L=0.56
zoomed
