1. Z. Shen, Projectively flat Randers metrics of constant flag curvature, Math. Ann.325(2003), 19-30.
2. B. Li, Projectively flat Matsumoto metric and its approximation, Acta Math. Sci. Ser. B Engl. Ed. 27(4) (2007), 781-789.
3. Z. Shen and G.C. Yildirim, On a class of projectively flat metrics with constant flag curvature, Canad. J. Math. 60(2) (2005), 443-456.
4. Z. Shen, Landsberg curvature, S-curvature and Riemann curvature. In: A Sample of Riemann-Finsler Geometry, MSRI Series, Vol 50. Cambridge: Cambridge University Press, 2004.
5. M. Kitayama, M. Azuma and M. Matsumoto, On Finsler spaces with (α; β)-metric,regularity, geodesics and main scalars, J. Hokkaido Univ. Education (Section II A),46(1) (1995), 1-10.
6. G. Hamel, Uber die Geometrien in denen die Geraden die K¨urzesten sind ¨ , Math. Ann.57(1903), 231-264.
7. S. S. Chern and Z. Shen, Riemann-Finsler Geometry, Singopore: World Scientific, 2005.
8. M. Matsumoto, Finsler spaces with (α, β)-metric of Douglas type, Tensor N.S, 60(1998),123-134.
9. D. Hilbert, Mathematical Problems, Bull Amer Math Soc, 2001, 37: 407-436; Reprinted from Bull Amer Math Soc, 8(1902), 437-479.
10. S. B´acs´o and M. Matsumoto, On Finsler spaces of Douglas type II. Projectively flat spaces, Publ. Math. Debrecen, 53(1998), 423-438.
11. X. Zhong and Y. Shen, On Einstein Matsumoto metrics, Publ. Math. Debrecen.85(2014), 15-30.
12. M. Rafie-Rad and B. Rezaei, On Einstein Matsumoto metrics, Nonlinear Anal. Real World Appl. 13(2) (2012), 882-886.
13. X. Zhong and Q. Xia, On Einstein Matsumoto metrics, Sci. China Math. 57(7) (2014),1517-1524.