D83, D84, E65, F16

D12, D83, O12, Z13

D91 D12 D83 L81 M37

J62, J23, J68, D83, C93, J15

: Underlying Principles), D82 (Asymmetric and Private Information), D83 (Search; Learning; Information

and Knowledge; Communication; Belief; Unawareness), L81 (Retail and Wholesale Trade; e-Commerce), L86 (Information Goods and Services, Internet Content)

O33; D83: O16; L14; O17; L81

M54, O33, J24, D23

I20, I21, I24, I28, D83

D83, C91

J24, L26, C93, O17, I23