@article {27793,
	title = {Quantum coherence via conditional entropy},
	journal = {Journal of Physics A: Mathematical and Theoretical},
	volume = {51},
	year = {2018},
	pages = {414018},
	publisher = {IOP Publishing},
	isbn = {1751-8121},
	author = {Liu, Yunchao and Zhao, Qi and Yuan, Xiao}
}
