1. Fundamentals of O.R.;Ackoff,1968
2. A competitive bidding strategy;Friedman;Ops. Res.,1956
3. Bidding strategies and probabilities;Gates;ASCE Construction Div. J.,1967
4. Competitive bidding;Hanssmann;Opl. Res. Q.,1959
5. The Advanced Theory of Statistics;Kendall,1958