Period length Advance payment 1 Advance payments 1 Costs 1 Delivery time 1 Evolution of cooperation 1 Evolutionary selection 1 Finite population 1 Game theory 1 Inventory control 1 Optimal ordering policy 1 Partial backordering 1 Partial prepayment 1 Prime number 1 Prisoner dilemma game 1 Prisoners' Dilemma 1 Probability distributions 1 Probability: distributions 1 Profit maximization 1 Profitability 1 Sales 1 Social behavior 1 Social environment 1 Stochastic control systems 1 Stochastic models 1 Stochastic period length 1 Stochastic systems 1 Stochastics 1 Temporal partitioning 1 Time points 1