Riccaboni, Massimo; Pammolli, Fabio; Buldyrev, Sergey V.; … - Dipartimento di Informatica e Studi Aziendali, … - 2009
The relationship between the size and the variance of firm growth rates is known to follow an approximate power-law behavior σ(S) similar to S^-β(S) where S is the firm size and β(S) almost equal to 0.2 is an exponent weakly dependent on S. Here we show how a model of proportional growth...