International comparison of real product and purchasing power /

por Kravis, Irving B., Kravis, Irving B., Heston, Alan W.
Publicado 1978

World product and income : international comparisons of real gross product /

por Kravis, Irving B., Kravis, Irving B., Heston, Alan W.
Publicado 1982

Estimating real production and expenditures across nations : a proposal for improving the Penn world tables /

por Feenstra, Robert C.
Publicado 2007