V.K. Oikonomou, “Amplification of the primordial gravitational waves energy spectrum by a kinetic scalar in F(R) gravity”, Astroparticle Physics, 144 (2023), 102777
V.K. Oikonomou, “Effects of a pre-inflationary de Sitter bounce on the primordial gravitational waves in f(R) gravity theories”, Nuclear Physics B, 984 (2022), 115985
S.D. Odintsov, V.K. Oikonomou, F.P. Fronimos, “Quantitative predictions for f(R) gravity primordial gravitational waves”, Physics of the Dark Universe, 35 (2022), 100950
Vasilis K. Oikonomou, Eirini C. Lymperiadou, “Effects of a Geometrically Realized Early Dark Energy Era on the Spectrum of Primordial Gravitational Waves”, Symmetry, 14:6 (2022), 1143
Sergei Odintsov, Vasilis Oikonomou, Ratbay Myrzakulov, “Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview”, Symmetry, 14:4 (2022), 729
Vasilis K. Oikonomou, “f(R)$f(R)$‐Gravity Generated Post‐Inflationary Eras and Their Effect on Primordial Gravitational Waves”, Annalen der Physik, 534:8 (2022)
Rafael Hernández, Juan Miguel Nieto, “Spinning strings in the η -deformed Neumann-Rosochatius system”, Phys. Rev. D, 96:8 (2017)