1. Hlavat′y, V., "Proper time, apparent time, and formal time in the twin paradox," J. Math. Mech., Vol. 9, 733-744, 1960.
2. Guven, J., "Classical and quantum mechanics of a relativistic system parametrized by proper time," Phys. Rev. D (3), Vol. 44, No. 10, 3360-3363, 1991.
3. Frisch, D. and J. Smith, "Measurement of the relativistic time dilation using μ-mesons," Amer. J. Phys., Vol. 31, No. 5, 342-355, 1963.
doi:10.1119/1.1969508
4. Idemen, M., "Derivation of the Lorentz transformation from the Maxwell equations," J. Electromagn. Waves Appl., Vol. 19, No. 4, 451-467, 2005.
doi:10.1163/1569393053303884
5. Sexl, R. U. and H. K. Urbantke, "Special relativity and relativistic symmetry in field and particle physics," Relativity, 2001.
6. Ungar, A. A., "Beyond the Einstein addition law and its gyroscopic Thomas precession: The theory of gyrogroups and gyrovector spaces," Fundamental Theories of Physics, Vol. 117, 2001.
7. Ungar, A. A., Analytic Hyperbolic Geometry: Mathematical Foundations and Applications, World Scientific, 2005.
8. Ungar, A. A., "Einstein′s special relativity: Unleashing the power of its hyperbolic geometry," Comput. Math. Appl., Vol. 49, 187-221, 2005.
doi:10.1016/j.camwa.2004.10.030
9. Woodhouse, N. M. J., Special Relativity, Springer Undergraduate Mathematics Series, 2003.
10. Sartori, L., Understanding Relativity: A Simplified Approach to Einstein′s Theories, University of California Press, 1996.
11. Schott, B. A., "On the motion of the Lorentz electron," Phil. Mag., Vol. 29, 49-62, 1915.
12. Chen, J.-L. and A. A. Ungar, "From the group sl(2, C)," Found. Phys., Vol. 31, No. 11, 1611-1639, 2001.
doi:10.1023/A:1012694816323
13. Ungar, A. A., "Gyrovector spaces and their differential geometry," Non-linear Funct. Anal. Appl., Vol. 10, No. 5, 791-834, 2005.
14. Vermeer, J., "A geometric interpretation of Ungar′s addition and of gyration in the hyperbolic plane," Topology Appl., Vol. 152, No. 3, 226-242, 2005.
doi:10.1016/j.topol.2004.10.012
15. Jackson, J. D., Classical Electrodynamics, second ed., 1975.