1. M. Boland, C. Freberg, and D. Barton . "Economic Issues with Food and Agribusiness Firm Profitability." Agricultural Industry Competitiveness Paper MF-2487, Kansas State University, 2000 .
2. Cash Grain Bids Data Service . "Historical Grain Price Data Service." Available athttp://www.CashGrainBids.com.
3. Evaluating the Integration of Contiguous Discontinuous Markets