Bodie, Zvi, Robert C. Merton, and William Samuelson. "Labor Supply Flexibility and Portfolio Choice in a Life-Cycle Model." Journal of Economic Dynamics & Control 16, nos. 3-4 (July–October 1992): 427 ...
The number of sales and the length of a product life cycle might be different for different products but all products share a general pattern of growth and decline. This cycle can be shown on a ...