John Haltiwanger

John Couch Haltiwanger (born December 12, 1955) is the Dudley and Louisa Dillard Professor of Economics and Distinguished University Professor of Economics at the University of Maryland-College Park. He is best known for his work developing and studying longitudinal firm-level microdata, which formed the foundation of his influential work on the determinants of firm-level job creation, job destruction, and economic performance. Provided by Wikipedia