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E. M. L. Beale and J. A. Tomlin, “Special Facilities in a General Mathematical Programming System for Non- Convex Problems Using Ordered Sets of Variables,” In: J. Lawrence, Ed., Proceedings 5th IFORS Conference, Tavistock, London & Wiley, New York, 1970, pp. 447-454.

has been cited by the following article:

• TITLE: Bid Optimization for Internet Graphical Ad Auction Systems via Special Ordered Sets

  AUTHORS: Ralphe Wiggins, John A. Tomlin

  KEYWORDS: Optimization, Advertising, Electronic Business

  JOURNAL NAME: iBusiness, Vol.2 No.3, September 30, 2010

  ABSTRACT: This paper describes an optimization model for setting bid levels for certain types of advertisements on web pages. This model is non-convex, but we are able to obtain optimal or near-optimal solutions rapidly using branch and cut open- source software. The financial benefits obtained using the prototype system have been substantial.