M. White, Constraining dark energy with SNe Ia and large scale structure, Phys. Rev. Lett. [**83**]{}, 670 (1999).

P. Ade et al., Planck 2015 results. XIII. Cosmological parameters, Astron. Astrophys. [**594**]{}, A13 (2016).

S. Weinberg, The Cosmological Constant Problem, Rev. Mod. Phy. [**61**]{}, 1 (1989).

E. Witten, Quantum gravity in de Sitter space, \[arXiv: hep-th/0106109\].

R. R. Caldwell, A Phantom menace? Phys. Lett. B [**545**]{} 23–29 (2002).

Y. Fujii, Origin of the gravitational constant and particle masses in a scale-invariant scalar-tensor theory, Phys. Rev. D [**26,**]{} 2580 (1982).

L. H. Ford, Cosmological-constant damping by unstable scalar fields, Phys. Rev. D [**35,**]{} 2339 (1987).

C. Wetterich, Cosmology and the Fate of Dilatation Symmetry, Nucl. Phys. B [**302,**]{} 668 (1988).

B. Ratra and P. J. E. Peebles, Cosmological consequences of a rolling homogeneous scalar field, Phys. Rev. D [**37,**]{} 3406 (1988).

S. M. Carroll, Quintessence and the Rest of the World: Suppressing Long-Range Interactions, Phys. Rev. Lett. [**81,**]{} 3067 (1998).

A. Hebecker, C. Witterich, Quintessential Adjustment of the Cosmological Constant, Phys. Rev. Lett. [**86,**]{} 3339 (2000).

A. Hebecker, C. Witterich, Natural quintessence? Phys. Lett. B [**497,**]{} 281 (2001).

R. R. Caldwell, M. Kamionkovski and N. N. Weinberg, Phantom energy and cosmic doomsday, 