The relationship between firms' growth rates and firm size distribution has been extensively analyzed in the literature. In particular, the breakdown of Gibrat law for medium and small firms has been identified as the reason for the emergence of a power law only in right tail of the size...

Labour productivity distribution (dispersion) is studied both theoretically and empirically. Superstatistics is presented as a natural theoretical framework for productivity. The demand index ê is proposed within this framework as a new business index. Japanese productivity data covering...

Credit relationships between commercial banks and quoted firms are studied for the structure and its temporal change from the year 1980 to 2005. At each year, the credit network is regarded as a weighted bipartite graph where edges correspond to the relationships and weights refer to the amounts...