When using this database, a reference should be made to the following paper:
Marcel P. Timmer (ed) (2012), "The World Input-Output Database (WIOD): Contents, Sources and Methods",
WIOD Working Paper Number 10, downloadable at http://www.wiod.org/publications/papers/wiod10.pdf
This paper provides an overview of the contents, sources and methods used in compiling the World Input-Output Database