@InProceedings{Wattenhofer2009Wireless,
	 author =	{Roger Wattenhofer and Magnus Halldorsson (Please note that there is a technical mistake in this paper; the constant factor approximation of the scheduling problem does not hold)},
	 title =	{{Wireless Communication is in APX}},
	 booktitle =	{{36th International Colloquium on Automata, Languages and Programming (ICALP), Rhodes, Greece}},
	 month =	{July},
	 year =		{2009}
}