@article{TW10,
	author  = { Ville Timonen and Jan Westerholm },
	title   = { {Scalable Height Field Self-Shadowing} },
	journal = { Computer Graphics Forum (Proceedings of Eurographics 2010) },
	year    = { 2010 },
	month   = may,
	volume  = { 29 },
	number  = { 2 },
	pages   = { 723--731 },
	url     = { http://wili.cc/research/hfshadow/ }
}