7Jepma C J. Extensions and application possibilities of the Constant Market Shares analysis:the case of the developing countries exports[ M]. Netherlands : University Press Groningen, 1986.
8Jepma, C.J. (1988). Extensions of the constant market shares analysis with an application to long -term export data of developing countries, The Balance Between Industry and Agriculture in Economic Development, Williamson, J.G. and Panchamukhi, V.R. (eds). St. Martin' s Press, New York :64-75.