J16, J24, M53
C93, I23
J16, J24, J81, C93
D74, I25, C93
B54; C9; J16; J21
Q48 – Energy: Government Policy; L25 – Firm Performance: Size, Diversification, and Scope; C93
C93, D90, H40, O18, Q54
I21, I24, I25, O15
D47, I21, I24, I28
C90, C93, D10, D14, D15, D22