1. A New Approach to Stockout Penalties
2. Optimal Inventory Policies in Perturbed Demand Models
3. Inventory models with a mixture of backorders and lost sales
4. “Inventory Models in Which Stockouts Influence Subsequent Demand”, Stanford University, School of Business, Research Report No. 12, Stanford, Calif. (1965)
5. , and , Studies in the Mathematical Theory of Inventory and Production (Stanford University Press, Stanford, Calif., 1958).