“…Conditions for the analytical complementarity of horizontal and vertical representations of structure are discussed in Leontief, 1991Leontief, [1928, Sraffa, 1960, Pasinetti, 1973, Quadrio Curzio, 1986, 1996. Characterizing features of those contributions are the utilization of aggregation and disaggregation procedures allowing the transformation of a horizontal structure into a vertical structure, and vice versa.…”