Fig. 5.
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Normalized radial displacement 
at the stellar surface (r = R⋆; upper panel) and at the crust-core interface (r = Ri = 0.9R⋆; lower panel) as a function of the normalized density difference 
between the core and the crust. The blue line corresponds to a completely fluid star, whereas the other lines correspond to stars with an elastic crust, for different values of β.
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