Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Toyonaga Satoshi and Nakatsubo Ryohei and Ikemori Fumikazu and Yamagami Makiko and Takeda Mayuko and Doi Masataka and Suzuki Akinori and Sugata Seiji,Source Apportionment of PM2.5 by Positive Matrix Factorization Model: Review of Existing Methods of the Model and Current Understandings of Source Apportionment in East Asia,Journal of Japan Society for Atmospheric Environment,1341-4178,Japan Society for Atmospheric Environment,2019-07-10,54,4,139-160,https://cir.nii.ac.jp/crid/1390282763129264640,https://doi.org/10.11298/taiki.54.139