3Amita Batra, (2004) "India' s Global Trade Potential: the Gravity Model Approach," www3.grips.ac.jp/-wpfau/eeonometrics/Gravity Model India. Pdf.
4Lucian Cernat, (2001) "Assessing Regional trade Agreements: Are South-South RTAs More Trade Diversion?," www.eldis.org/static/ DOC13097.htm.
5Laura Marquez-Ramos,Inmaculada Martinez-Zarzoso, (2005) "Does Heterogeneity Matter in The Context of The Gravity Model?," http://www.economicsbulletin.uiuc.edu/2005/volume6/EB-05F10089A.pdf.
6M. Kabir Hassan, (2001) "Is SAARC a Viable Economic Block? Evidence from Gravity Model," Journal of Asian Economics 12.