| Article ID: | iaor1991819 |
| Country: | United States |
| Volume: | 38 |
| Issue: | 4 |
| Start Page Number: | 323 |
| End Page Number: | 331 |
| Publication Date: | Dec 1990 |
| Journal: | Technological Forecasting & Social Change |
| Authors: | Bhargava Subhash C., Sahani Vikas, Srivastava Pramod K., Varma Vijay S. |
Some comments are made on a recent paper by Gordon and Greenspan. Two interesting variants of the logistic difference equation in the context of innovation diffusion, the first with a superimposed periodic force term and the second with an additional lag of one generation, with their new features are discussed.