Axiomatic formulations of modified gravity theories with nonlinear dispersion relations and Finsler–Lagrange–Hamilton geometryLaurenţiu Bubuianu and Sergiu I. VacaruEur. Phys. J. C, 78 11 (2018) 969DOI: https://doi.org/10.1140/epjc/s10052-018-6431-7