Sagnac delay in the Kerr-dS spacetime: Implications for Mach’s principleR. Kh. Karimov, R. N. Izmailov, G. M. Garipova and K. K. NandiEur. Phys. J. Plus, 133 2 (2018) 44DOI: https://doi.org/10.1140/epjp/i2018-11919-x