Sheriff Ghali Ibrahim and Abdullahi Liman
Journal of Economics Theory 6 ( 3 ): 81 - 90 , 2012
Pakistan Journal of Social Sciences 6 ( 5 ): 321 - 333 , 2009
Sheriff Ghali Ibrahim, Sadeeque Abba and Iro Iro Uke
Pakistan Journal of Social Sciences 9 ( 6 ): 246 - 253 , 2012
The Social Sciences 5 ( 1 ): 33 - 44 , 2010
Sheriff Ghali Ibrahim, Abdullahi Liman and Iro Iro Uke
The Social Sciences 8 ( 2 ): 123 - 128 , 2013