The authors report several characteristics of industrial dynamics, including the firm size distribution, Gibrats Law, and also the distribution of growth rates and their autocorrelation. They se a variety of econometric techniques, looking first at the aggregate and subsequently at a sectoral level. Many of the results corroborate previous findings, but there are also several surprises.
Link
http://www.lem.sssup.it/WPLem/files/2005-21.pdf