Design Philosophies to Support the Front Line
by Jonathan Sorensen, Marketing News, Vol. 33, No. 20, September 27, 1999, p. 26.

Eye on the Shelf:  Point-of-Purchase Research
by Jonathan Sorensen, Marketing News, Vol. 33, No. 1, January 4, 1999

In P-O-P, Pictures Worth a Thousand Purchases
by William J. Hruby and James Sorensen, Marketing News, Vol. 33.No. 24, November 22, 1999, p. 21-22.

Learning from Execution Problems
by Jonathan Sorensen, Quirks, June 1999

Point of Packaging
by William J. Hruby and James Sorensen, Boxboard Containers International, Vol. 107, No. 2, September 1999, p. 14-16.

Statistical Approach to Security/Past Participation Problems
by Herb Sorensen, Quirks, Vol. XIV, No. 3, March 2000, p. 28-31.