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Estimates of the North Korean gross domestic product : 1956 - 1959
Goto, Fujio, (1990)
Differences in estimates of North Korea's GNP
Jeon, Kyong-mann, (1982)
A practical approach to the estimation of North Korea's GNP
Yi, Chong-wŏn, (2001)
China model
Niwa, Haruki, (1985)
Future trends in Soviet military production, defence expenditure, and economic growth : a simulation analysis by Model No 5 "revised"
Niwa, Haruki, (1979)