作者: J.C. Fisher , R.H. Pry
DOI: 10.1016/S0040-1625(71)80005-7
关键词: Technical change 、 Substitution model 、 Economic sector 、 Limiting 、 Technological change 、 Econometrics 、 Management science 、 Variety (cybernetics) 、 Computer science 、 New product diffusion 、 Simple (philosophy)
摘要: … upon the idea that any substitution that has gained a few … volume, and hence that the substitution will proceed to 100 percent. … and the time at which the substitution is half complete. …