D13, I2, J13, J16, J22
Q16, O33, D83, J16, C93
J22, J64, J16
J16, J24, O33, L96, D13, D83
D83, D91, J16, J29, O53, Z12, Z13
C93, J16, O33, K42
(Consumer Economics: Empirical Analysis), Q42 (Alternative Energy Sources)
J24, O33, D91, J22
J22, I12, Q54
E31, C83, D84, J22