Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Peter S. Fader and Bruce G.S. Hardie and Ka Lok Lee,RFM and CLV: Using Iso-Value Curves for Customer Base Analysis,Journal of Marketing Research,0022-2437,SAGE Publications,2005-11,42,4,415-430,https://cir.nii.ac.jp/crid/1362262945930444800,https://doi.org/10.1509/jmkr.2005.42.4.415