[1] Baumann, D. and Green, D. (2011) Journal of Cosmology and Astroparticle Physics, 2011. (IOP Journal)
[2] Li, M. and Wang, Y. (2010) Physics Letters B, 687, 243-247. http://dx.doi.org/10.1016/j.physletb.2010.03.042
[3] Longair, M.S. (2003) Planck and Natural Units. In: Theoretical Concepts in Physics: An Alternative View of Theoretical Reasoning in Physics, 2nd Edition, Cambridge University Press, New York, 336.
http://dx.doi.org/10.1017/CBO9780511840173
[4] Perkins, D.H. (2000) Introduction to High Energy Physics. 4th Edition, Cambridge University Press, New York.
http://dx.doi.org/10.1017/CBO9780511809040
[5] Artru, X. and Rullhusen, P. (1998) Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 145, 1-7. http://dx.doi.org/10.1016/S0168-583X(98)00241-9
[6] Barton, G. (1990) Physics Letters B, 237, 559-562. http://dx.doi.org/10.1016/0370-2693(90)91224-Y
[7] Boffi, S., Giusti, C. and Pacati, F.D. (1979) Nuclear Physics A, 319, 461-476.
http://dx.doi.org/10.1016/0375-9474(79)90526-8
[8] Kolbenstvedt, H. (1967) Journal of Applied Physics, 38, 4785-4787. http://dx.doi.org/10.1063/1.1709220
[9] Tsyba, P.Y., Kulnazarov, I.I., Yerzhanov, K.K. and Myrzakulov, R. (2011) International Journal of Theoretical Physics, 50, 1876-1886. http://dx.doi.org/10.1007/s10773-011-0703-4
[10] Corda, C. (2009) International Journal of Modern Physics D, 18, 2275. http://dx.doi.org/10.1142/S0218271809015904
[11] Kothawala, D., Sarkar, S. and Padmanabhan, T. (2007) Physics Letters B, 652, 338-342.
http://dx.doi.org/10.1016/j.physletb.2007.07.021
[12] Mirza, B. and Zamaninasab, M. (2007) Journal of High Energy Physics, 2007. (IOP Journal)
[13] Witten, E. (1986) Physics and Geometry. In: Proceedings of the International Congress of Mathematicians, Berkeley, 3-11 August 1986.