Data Quality and Data Cleaning. Andreadis, I. In Garzia, D. & Marschall, S., editors, Matching Voters with Parties and Candidates. Voting Advice Applications in Comparative Perspective, pages 79–91. ECPR Press, 2014.
bibtex   
@incollection{Andreadis2014,
	title = {Data {Quality} and {Data} {Cleaning}},
	isbn = {978-1-907301-73-5},
	urldate = {2017-06-10},
	booktitle = {Matching {Voters} with {Parties} and {Candidates}. {Voting} {Advice} {Applications} in {Comparative} {Perspective}},
	publisher = {ECPR Press},
	author = {Andreadis, Ioannis},
	editor = {Garzia, Diego and Marschall, Stefan},
	year = {2014},
	keywords = {VAA},
	pages = {79--91},
}

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