Triolaire, Guy - In: Revue d'Économie Industrielle 11 (1980) 1, pp. 93-116
[eng] The study is based on the analysis of a table presenting as many lines as there are large firms and as many columns as there are industrial products (« level 600 »; classification with four digit classes). A breakdown of the firms' sales by product may be read along the lines. The table...