C81, C91
E31, E52, E58, D84
O13, Q12, Q16, C93, D83.
C72, C78, C91, C92
c91, c99, d81, e22, g11, g40
c91, c99, d81, e22, g11, G40
C90, D81, D91, G11, I31
D81, D83, D84, C93, I26
D83, D84, I24
(Technological Change: Choices and Consequences; Diffusion Processes), D91 (Micro-Based Behavioral