1. Arbab, A. I., "The analogy between matter and electromagnetic waves," Europhysics Letters, Vol. 94, No. 5, 50005, 2011.
doi:10.1209/0295-5075/94/50005
2. Vigier, J. P., "Evidence for nonzero mass photons associated with a vacuum-induced dissipative red-shift mechanism," IEEE Transactions on Plasma Science, Vol. 18, No. 1, 64-72, 1990.
doi:10.1109/27.45506
3. Kar, G., M. Sinha, and S. Roy, "Maxwell equations, nonzero photon mass, and conformal metric fluctuation," Int. J. Theor. Phys., Vol. 32, 593-607, 1993.
doi:10.1007/BF00673762
4. Bardeen, J., L. N. Cooper, and J. R. Schrieffer, "Theory of superconductivity," Phys. Rev., Vol. 108, 1175, 1957.
doi:10.1103/PhysRev.108.1175
5. Bass, L. and E. Schodinger, "Must the photon mass be zero?," Proc. Roy. Soc. London A, Vol. 232, No. 1188, 1-6, 1955.
doi:10.1098/rspa.1955.0197
6. Proca, A., "Sur la theorie ondulatoire des electrons positifs et negatifs," J. Phys. Radium, Vol. 7, 347-353, 1936.
doi:10.1051/jphysrad:0193600708034700
7. Aharonov, Y. and D. Bohm, "Significance of electromagnetic potentials in the quantum theory," Phys. Rev., Vol. 115, 485, 1959.
doi:10.1103/PhysRev.115.485
8. Higgs, P. W., "Broken symmetries and the masses of gauge bosons," Phys. Rev. Lett., Vol. 13, 508, 1964.
doi:10.1103/PhysRevLett.13.508
9. Ginzburg, V. L. and L. D. Landau, "On the theory of superconductivity," Zh. Eksp. Teor. Fiz., Vol. 20, 1064-1082, 1950.
10. Tu, L.-C., J. Luo, and G. T. Gilles, "The mass of the photon," Rep. Prog. Phys., Vol. 68, 77, 2005.
doi:10.1088/0034-4885/68/1/R02
11. Lakes, R., "Experimental limits on the photon mass and cosmic magnetic vector potential," Phys. Rev. Lett., Vol. 80, 1826, 1998.
doi:10.1103/PhysRevLett.80.1826
12. Goldhaber, A. S. and M. M. Nieto, "Terrestrial and extraterrestrial limits on the photon mass," Rev. Mod. Phys., Vol. 43, 277, 1971.
doi:10.1103/RevModPhys.43.277
13. Poenaru, D. N. and A. Calboreanu, Europhysics News, Vol. 37, 24, 1990.
14. Van Vlaenderen, K. J., "generalization of classical electrodynamics for the prediction of scalar field effects," Classical Physics, 2003, http://arxiv.org/abs/physics/0305098v1.
15. Griffiths, D., Introduction to Electrodynamics, Prentice-Hall, 1999.
16. Arbab, A. I. and Z. A. Satti, "The generalized Maxwell equations and the prediction of electroscalar wave," Progress in Physics, Vol. 2, 8, 2009.
17. Arbab, A. I. and H. M. Widatalla, "The generalized continuity equation," Chinese Physics Letters, Vol. 27, 084703, 2010.
doi:10.1088/0256-307X/27/8/084703
18. Arbab, A. I., "Complex Maxwell's equations," Chin. Phys. B, Vol. 22, No. 3, 030301, 2013.
doi:10.1088/1674-1056/22/3/030301