@inproceedings{TUW-222586, author = {Monti, Gianna and Hron, Karel and Filzmoser, Peter and Templ, Matthias}, title = {Covariance-Based Outlier Detection for Compositional Data with Structural Zeros: Application to Italian Survey of Household Income and Wealth Data}, booktitle = {Dipartimento di Economia, Metodi Quantitativi e Strategie di Impresa}, year = {2013}, editor = {Vita e Pensiero, Di}, organization = {Vita e Pensiero}, publisher = {Vita e Pensiero}, url = {http://boa.unimib.it/handle/10281/44960#.UqcrX6qnd3A}, isbn = {9788834325568}, keywords = {structural zeros; missing value imputation; Aitchison geometry on the simplex; Mahalanobis distance; variation matrix} }