F. E. Cala Vitery, A. R. Gómez Plata, and J. F. Ramos Caro, “FROM THE RELATIVITY OF INERTIA TO THE CLOSED UNIVERSE”, Rev. Acad. Colomb. Cienc. Ex. Fis. Nat., vol. 31, no. 118, pp. 97–108, Dec. 2023.