1David Simpson and Jinkichi Tsukui (1965). The Fundamental Structure of Input-Output Tables ,an International Comparison.[J].Review of Economics and Statistics.Ⅺ.Ⅴ Ⅱ (4). 434-46.
2Holub H W and H Schnabl (1985). Qualitative Input-Output Analysis and Structural information. [J].Economic Modeling. 2,67-73.
3Michael Bacharach(1970). The Solution of the Biproportional Constrained Matrix problem. [M].in Biproportional Matrices & Input-Output Change. Chapter 4. Cambridge ,Cambridge University Press. 43-59.
4Santadas Ghosh & Joyashree Roy. Qualitative Input-Output Analysis of the Indian Economic Structure. [J]. Economic Systems Research. 1998. V10,No. 3.