Nikodem J Popławski, “The present universe in the Einstein frame, metric-affine R + 1/ R gravity”, Class. Quantum Grav., 23, no. 15, 2006, 4819
Nikodem J Popławski, “The cosmic snap parameter in f ( R ) gravity”, Class. Quantum Grav., 24, no. 11, 2007, 3013
J Muñoz Masqué, M Eugenia Rosado María, “Invariant variational problems on linear frame bundles”, J. Phys. A: Math. Gen., 35, no. 8, 2002, 2013
Andrzej Borowiec, Michał Kamionka, Aleksandra Kurek, Marek Szydłowski, “Cosmic acceleration from modified gravity with Palatini formalism”, J. Cosmol. Astropart. Phys., 2012, no. 02, 2012, 027
Yousef Sobouti, “An f(R) gravitation for galactic environments”, Proc. IAU, 2, no. S238, 2006, 451
Christian G. Böhmer, Francisco S. N. Lobo, Nicola Tamanini, “Einstein static universe in hybrid metric-Palatini gravity”, Phys. Rev. D, 88, no. 10, 2013, 104019
E.I. Guendelman, Gonzalo J. Olmo, D. Rubiera-Garcia, M. Vasihoun, “Nonsingular electrovacuum solutions with dynamically generated cosmological constant”, Physics Letters B, 726, no. 4-5, 2013, 870
Andrzej Borowiec, Marco Ferraris, Mauro Francaviglia, Igor Volovich, “Almost-complex and almost-product Einstein manifolds from a variational principle”, Journal of Mathematical Physics, 40, no. 7, 1999, 3446
Spiros Cotsakis, Ifigeneia Klaoudatou, Georgios Kolionis, John Miritzis, Dimitrios Trachilis, “The Conformal Cosmological Potential”, Astronomy, 1, no. 1, 2022, 17
Andrey N. Makarenko, Sergei Odintsov, Gonzalo J. Olmo, “Born-Infeldf(R)gravity”, Phys. Rev. D, 90, no. 2, 2014, 024066