@conference {Distleretal98,
	title = {Navigation in real and virtual environments: judging orientation and distance in a large-scale landscape},
	booktitle = {{Virtual Environment 98: Proc. of the Eurographics Workshop 1998}},
	year = {1998},
	pages = {124~{\textendash}~133},
	publisher = {Springer},
	organization = {Springer},
	address = {Berlin}
}
