1. Almon C: Investment in input–output models and the treatment of secondary products. In Applications of input–output analysis. Edited by: Carter AP, Brôdy A. North-Holland, Amsterdam; 1970.
2. Almon C: The INFORUM approach to interindustry modelling. Econ Syst Res 1991, 3: 1–8. 10.1080/09535319100000001
3. Almon C: Product-to-product tables via product technology with no negative flows. Econ Syst Res 2000, 12: 27–43. 10.1080/095353100111263
4. Armstrong AG: Technology assumptions in the construction of United Kingdom input–output tables. In Estimating and updating input–output coefficients. Edited by: Allen RIG, Gossling WF. Input–Output Publishing Co, London; 1975.
5. Avonds L, Gilot A (2002) The new Belgian input–output table—general principles. Paper presented at the Fourteenth International Conference on Input–Output Techniques, Montreal, Canada, 10–15 October.
http://www.iioa.org/pdf/14th%20conf/Avonds8.pdf