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Determining the number of factors for non-negative matrix and its application in source apportionment of air pollution in Singapore
Yan, Mei, Yang, Xiaojie, Hang, Weiqiang, Xia, YingcunJournal:
Stochastic Environmental Research and Risk Assessment
DOI:
10.1007/s00477-019-01677-z
Date:
June, 2019
File:
PDF, 527 KB
2019