@article {tomsovic2003comment,
	title = {Comment on {\textquotedblleft}Ehrenfest times for classically chaotic systems{\textquotedblright}},
	journal = {Physical Review E},
	volume = {68},
	year = {2003},
	pages = {038201},
	publisher = {APS},
	abstract = {In a recent Rapid Communication [P. G. Silvestrov and C. W. J. Beenakker, Phys. Rev. E 65, 035208(R) (2002)], the authors, Silvestrov and Beenakker, introduce a way to lengthen the Ehrenfest time τ for fully chaotic systems. We disagree with several statements made in their paper, and address the following points essential to their conclusions: (1) it is not true that all semiclassical approximations for chaotic systems fail at a so-called {\textquotedblleft}log time{\textquotedblright} τ∝-ln(h), differing only by a numerical coefficient; and (2) the limitation of the semiclassical approximation as expressed in the authors{\textquoteright} Eq. (8) is not limited by their argument leading to Eq. (12).},
	url = {https://doi.org/10.1103/PhysRevE.68.038201},
	author = {Steven Tomsovic and Heller, EricJ.}
}
