Using an ascending sampling strategy to survey connected egocentric networks: A field work report on phase one of the survey. Kowald, M., Frei, A., Hackney, Keith, J., Illenberger, J., Axhausen, W, K., Hackney, Keith, J., Hackney, Keith, J., Axhausen, W, K., Axhausen, & W, K. ETH, Eidgenössische Technische Hochschule Zürich, IVT, Institut für Verkehrsplanung und Transportsysteme, 2009.
bibtex   
@book{ kowald2009using,
  title = {Using an ascending sampling strategy to survey connected egocentric
	networks: A field work report on phase one of the survey},
  publisher = {ETH, Eidgenössische Technische Hochschule Zürich, IVT, Institut
	für Verkehrsplanung und Transportsysteme},
  year = {2009},
  author = {Kowald, Matthias and Frei, Andreas and Hackney, Jeremy Keith and
	Illenberger, Johannes and Axhausen, Kay W and Hackney, Jeremy Keith
	and Hackney, Jeremy Keith and Axhausen, Kay W and Axhausen, Kay W}
}

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