共 33 条
[1]
Akhabari R., 2019, HEILYON, P1, DOI [10.1016/j.heliyon.2019.e02516, DOI 10.1016/J.HELIYON.2019.E02516]
[2]
Akpan G.E., 2012, International Journal of Energy Economics and Policy, V2, P292
[3]
Akpan U.F., 2016, J EC MANAGEMENT TRAD, V15, P1, DOI DOI 10.9734/BJEMT/2016/28877
[4]
Akpan UF., 2011, P NAEE C GREEN EN EN, P212
[5]
Akpan Usenobong F., 2015, Journal of Economic Research (JER), V20, P317
[7]
[Anonymous], 2011, EAAE 2011 C AUG 30 S