| [1] | D. V. Gal'tsov and E. A. Davydov, Int. J. Mod. Phys.: Conf. Ser., 14: 316 (2012) | 
	
			| [2] | D. V. Gal'tsov and E. A. Davydov, Proc. Steklov Inst. Math., 272: 119 (2011). | 
	
			| [3] | E. A. Davydov and D. V. Gal'tsov, Gravit. Cosmol., 21: 35 (2015) | 
	
			| [4] | D. V. Gal'tsov, Proceedings of the 43rd Rencontres de Moriond La Thuile J08, Gal'tsov(1-16) (2008). [arXiv:0901.0115v1 [gr-qc]] | 
	
			| [5] | V. V. Dyadichev, D. V. Gal'tsov, A. G. Zorin, and M. Yu. Zotov, Phys. Rev. D, 65: 084007 (2002) | 
	
			| [6] | Y. Q. Cai and G. Papini, Mod. Phys. Lett. A, 4: 1143 (1989) | 
	
			| [7] | F. Wilczek and A. Zee, Phys. Rev. Lett., 52: 2111 (1984) | 
	
			| [8] | Y. Q. Cai and G. Papini, Class. Quantum Grav., 7: 269 (1990) | 
	
			| [9] | S. Albeverio and S. Mazzucchi, J. Funct. Anal., 238: 471 (2006) | 
	
			| [10] | O. V. Usatenko, J.-P. Provost, G. Valle, and A. Boudine, Phys. Lett. A, 250: 99 (1998) | 
	
			| [11] | J. H. Hannay, J. Phys. A: Math. Gen., 18: 221 (1985) | 
	
			| [12] | D. H. Kobe and J. Zhu, Int. J. Mod. Phys. B, 7: 4827 (1993) | 
	
			| [13] | H. D. Liu, X. X. Yi, and L. B. Fu, Ann. Phys. (N.Y.), 339: 1 (2013) | 
	
			| [14] | A. K. Pati, Ann. Phys. (N.Y.), 270: 178 (1998) | 
	
			| [15] | O. V. Usatenko, J.-P. Provost, and G. Valle, J. Phys. A: Math. Gen., 29: 2607 (1996) | 
	
			| [16] | B. K. Pal, S. Pal, and B. Basu, Class. Quantum Grav., 30: 125002 (2013) | 
	
			| [17] | D. P. Datta, Phys. Rev. D, 48: 5746 (1993) | 
	
			| [18] | S. P. Kim, Phys. Lett. A, 191: 365 (1994) | 
	
			| [19] | D. P. Datta, Mod. Phys. Lett. A, 08: 601 (1993) | 
	
			| [20] | A. Mostafazadeh, Turk. J. Phys., 24: 411 (2000) | 
	
			| [21] | B. K. Pal, S. Pal, and B. Basu, J. Phys.: Conf. Ser., 405: 012025 (2012) | 
	
			| [22] | R. Brout and G. Venturi, Phys. Rev. D, 39: 2436 (1989) | 
	
			| [23] | H. Rosu, P. Espinoza, and M. Reyes, Il Nuovo Cimento B, 114: 1439 (1999) | 
	
			| [24] | A. D. A. M. Spallicci, Il Nuovo Cimento B, 119: 1215 (2004) | 
	
			| [25] | M. V. Berry and M. A. Morgan, Nonlinearity, 9: 787 (1996) | 
	
			| [26] | W. Zhao, Y. Zhang, and M. Tong, Quantum Yang-Mills condensate dark energy models, in Dark Energy: Theories, Developments and Implications, K. Lefebvre and R. Garcia(eds.), Ch. 5 (New York, Nova Science Publishers, Inc., 2010). pp. 89-110 | 
	
			| [27] | Y. Zhang, T. Y. Xia, and W. Zhao, Class. Quantum Grav. 24: 3309 (2007) | 
	
			| [28] | T. Y. Xia and Y. Zhang, Phys. Lett. B, 656: 19 (2007) | 
	
			| [29] | S. Wang, Y. Zhang, and T. Y. Xia, J. Cosmol. Astropart. Phys., 2008: 037 (2008) | 
	
			| [30] | Y. Zhang, Phys. Lett. B, 340: 18 (1994) | 
	
			| [31] | P. A. R. Ade et al, Phys. Rev. Lett., 112: 241101 (2014) | 
	
			| [32] | P. A. R. Ade et al, arXiv: 1603.05976v1 (2016) | 
	
			| [33] | J. J. van der Bij and E. Radu, Int. J. Mod. Phys. A, 18: 2379 (2003) | 
	
			| [34] | G. D. Moore, Phys. Rev. D, 62: 085011 (2000) | 
	
			| [35] | S. Golin, J. Phys. A: Math. Gen., 22: 4573 (1989) | 
	
			| [36] | S. Golin, A. Knauf, and S. Marmi, Commun. Math. Phys., 123: 95 (1989) | 
	
			| [37] | S. Golin and S. Marmi, Europhys. Lett., 8: 399 (1989) | 
	
			| [38] | S. Golin and S. Marmi, Nonlinearity, 3: 507 (1990) | 
	
			| [39] | A. D. A. M. Spallicci, A. Morbidelli, and G. Metris, Nonlinearity, 18: 45 (2005) | 
	
			| [40] | C. A. Mead, Phys. Rev. Lett., 59: 161 (1987) | 
	
			| [41] | S. C. Li, J. Liu, and L. B. Fu, Phys. Rev. A, 83: 042107 (2011) | 
	
			| [42] | A. G. Wagh, V. C. Rakhecha, P. Fischer, and A. Ioffe, Phys. Rev. Lett., 81: 1992 (1998) |