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

I20, I21, I24, I28, D83

D83, C91

D83, D84, G11, G12, G41, G51

D14, D81, D83, G41, G53, O33

A13, C93, D71, D72, D83, F22, H23, J15, J38, J60, J68, P16