3Aschauer, David Alan. Is public expenditure pro-ductive[ J] . Journal of Monetary Economics,1989, ( 23 ):177 -200.
4Boamet,Marlon G,Spillovers and LocationalEffects of Public Infrastructure [ J] . Journal of RegionalScience, 1998,(38) : 381 -400.
5Baldwin,R.,R. Forslid.,P. Martin, et aL . E-conomic geography and public policy[ J]. Princeton : Prin-ceton University Press,2003.
6Zahra, S.,Rawhouser, H. N.,Bhawe, N.,Neubaum,D. O. and Hayton, J. C. Globalization of SocialEntrepreneurship [ J ] . Strategic Entrepreneurship Journal,2008,2(2) : 117-131.
7Edame Greg Ekpung. Trends Analysis Of PublicExpenditure On Infrastructure And Economic Growth InNigeria[ J]. International Journal of Asian Social Science,2014,4(4): 480-491.
8Bougheas S,Demetriades P 0,Mamuneas T P.Infrastructure,specialization, and economic growth [ J ].Canadian Journal of Economics /Revue canadienne d ^conomique,2000,33 ( 2) : 506-522.