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LibreCat: https://research-explorer.ista.ac.at/record/11774
DOI: 10.1007/978-3-662-48995-6_17
arXiv: 1509.09147

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LibreCat: https://research-explorer.ista.ac.at/record/11773
DOI: 10.1007/978-3-662-48995-6_8
arXiv: 1604.05562