1. H. Rund, The Differential Geometry of Finsler Spaces, Springer Verlag, Berlin (1959).
2. M. Matsumoto, Foundations of Finsler Geometry and Special Finsler Spaces, VEB, Berlin (1977).
3. G. Treder, Theory of Gravitation and the Principle of Equivalence, Atomizdat, Moscow (1973).
4. H.-J. Treder, Foundations of Physics,1, 77 (1970).
5. V. I. Rodichev, Theory of Gravitation in an Orthogonal Reference Frame, Nauka, Moscow (1974).