"Why Use RFM?" by John Miglautsch
	"Libey on Recency, Frequency, and Monetary Value" by Don Libey
	"Thoughts on RFM Scoring" by John Miglautsch
	"What to do with the 1-1-1s" by John Miglautsch
	"Making Your Database Pay Off with Recency, Frequency and Monetary Analysis" by Arthur Middleton Hughes