@inproceedings {fieguth1998hierarchical,
	title = {Hierarchical methods for global-scale estimation problems},
	booktitle = {Conference Proceedings. IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No. 98TH8341)},
	volume = {1},
	year = {1998},
	pages = {161{\textendash}164},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Fieguth, Paul W and Allen, MR and Murray, MJ}
}
