J24, L86, O31, O32, O33, D81, D83, M13

C93, D72, L82, L86, L88

A23, C93, J24, O31, L86, I31

D83, L86, O33, P16

I25 D85 L86 O55

J64, J21, J24, J46, D03, D81, D83, C93, L86, J62

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

and Private Information), L86 (Information Goods and Services, Internet Content)

J64, J24, D03, D81, D83, C93, L86

C93, D83, D91, I23, I31, L82, L86, O33