@techreport{Lehtinen07Meshless,
	author = {Jaakko Lehtinen and Matthias Zwicker and Janne Kontkanen and Emmanuel Turquin and Fran\c{c}ois X. Sillion and Timo Aila},
	title = {Meshless Finite Elements for Hierarchical Global Illumination},
	year = {2007},
	month = may,
	number = {TML-B7},
	institution = {Helsinki University of Technology},
	isbn = {978-951-22-8816-8},
	issn = {1455-9730},
	type = {Publications in Telecommunications Software and Multimedia},
}