I20 I21 I22 I24 C93 O15
C93, D83, J16, I21
Q53, I21, C93
I21, I23
C93, I21, I22, I25
I21, D91, C93, J16, A20
C93 (Field Experiments); D12 (Consumer Economics: Empirical Analysis); H2 (Taxation, Subsidies
I21, O15, C93
I20, I21, I25, C93
I21, I25, I28, J24, O15