1Alfred Weber, "Theory of the Location of Industries", Translated with an introduction and notes by Carl J. Ffiedrleh, The University of Chicago Press, Chicago & London, 1965.
2Lcosh, A, "Die raurnliche Ordnung der Wirtschaft", Jena: G Fisher. 1944.
3Thunen, J H Von, "Der Isolierte Staat in Beziehung auf Landwirtschaft und Nationalokomie",Berlin: Hempel and Parey, 1895.
4A P Lerner and H W Singer, "Some Notes on Duopdy and Spatial Gompetition", Journal of Political Economy, XLV, PP. 145 -186.
5Stephen Enke, "Space and Value", Journal of Political Economy, XLVI, 1942, PP. 627- 637,629-630.
7Alfred Weber, ''Theory of the Location of Industries'', Translated with an introduction and notes by Carl J. Friedrich, The University of Chicago Press, Chicago & London, 1965.
8Losch, A, ''Die raumliche Ordnung der Wirtschaft'', Jena: G.Fischer. 1944.
9Thunen, J. H. Von,''Der Isolierte Staat in Beziehung auf Landwirtschaft und Nationalokomie'',Berlin: Hempel and Parey, 1895.
10A. P. Lerner and H. W. Singer, ''Some Notes on Duopoly and Spatial Competition'', Journal of Political Economy, XLV, PP. 145 -186.
