890 citations · 1k across the 4 of their papers we have counts for
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gr-qc2008★ 4 cited
Generalized modified gravity models: the stability issue
Guido Cognola, Sergio Zerbini
A brief introduction on the issue of stability in generalized modified gravity is presented and the dynamical system methods are used in the investigation of the stability of spati…
hep-th2008★ 890 cited
Class of viable modified gravities describing inflation and the onset of accelerated expansion
G. Cognola, E. Elizalde, S. Nojiri +3
A general approach to viable modified gravity is developed in both the Jordan and the Einstein frames. A class of exponential, realistic modified gravities is introduced and…