@article {RokhsarS86,
	title = {Quasi-crystalline textures of cholesteric liquid-crystals - blue phase-iii},
	journal = {Physical Review Letters},
	volume = {56},
	year = {1986},
	pages = {1727-1730},
	author = {Rokhsar, D. S. and Sethna, J. P.}
}
