1. How much does forgetting cost?;Carlson;Indust. Eng.,1976
2. Start-up management;Ballof;IEEE Trans. Eng. Manage.,1970
3. Straightening out the learning curves;Corlett;Personnel Manage.,1970
4. Profit from the learning curve;Hirschmann;Harvard Bus. Rev.,1964
5. The prediction of learning rates for manual operations;Hancock;J. Indust. Eng.,1967