O12, O13, Q12, D22, M13, C81, C83, C93, D50
I3, J1, O12
C90, D81, D91, G11, I31
O12, O14, M31, L26
O12; O16; G52; H53
(Technological Change: Choices and Consequences; Diffusion Processes), D91 (Micro-Based Behavioral
L83, Z31, D91, D12, D35
C93, I21, I25, J13, O12, O15
C91, D91, Z13
J71, D91, C90