@inproceedings{KMS05,
	Author = {R. J. Kang and T. M{\"u}ller and J.-S. Sereni},
	Booktitle = {{P}roceedings of {E}uropean {C}onference on {C}ombinatorics, {G}raph {T}heory and {A}pplications ({E}uro{C}omb 2005)},
	Pages = {193--198},
	Title = {Improper colouring of (random) unit disk graphs},
	Year = {2005}}