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Kirk Paul Lafler is consultant and founder of Software Intelligence Corporation and has been programming in SAS since 1979. As a SAS Certified Professional and SAS Institute Alliance Member (1996 – 2002), Kirk provides IT consulting services and training to SAS users around the world. As the author of four books including PROC SQL: Beyond the Basics Using SAS (SAS Institute. 2004), he has written more than three hundred peer-reviewed papers and articles that have appeared in professional journals and SAS User Group proceedings. Kirk has also been an Invited speaker and trainer at more than three hundred SAS International, regional, local, and special-interest user group conferences and meetings throughout North America. His popular SAS Tips column, “Kirk’s Korner of Quick and Simple Tips”, appears regularly in several SAS User Group newsletters and Web sites, and his fun-filled SASword Puzzles are featured in SAScommunity.org and other venues.
http://en.wikipedia.org/wiki/Kirk_Paul_Lafler