1. Delay of payment for extraordinary purchases;Arcelus,1988
2. Price discounts for extraordinary purchases;Arcelus,1990
3. Delay of payments vs. price discounts for extraordinary purchases: The buyer's perspective;Arcelus;Engineering Costs and Production Economics,1990
4. Buyer's strategies for various types of anticipated price changes;Arcelus,1990
5. A note on optimal ordering policies under conditions of payment privileges;Arcelus,1991