9SASSI M. Agricultural convergence and competitiveness in the EU-15 regions[A]. IAAE,26th Conference of the International Association of Agricultural Economists [C].Gold Coast,Australi- a:International Association of Agricultural Economists,2006,1- 19.
10KISAN G,JONATHAN P,JAN D.FAO/WFP Crop and food se- curity assessment mission national association of agricultural e- conomists conference [R].Gold Coast,Australia:Zimbabwe, Food and Agriculture Organization of the United Nation, 2010,1-34.
