Empirical EconomicsFebruary 2011, Volume 40, Issue 1, pp 1–4 | Cite asIntroduction to the special issueAuthorsAuthors and affiliationsBadi H. BaltagiEmail authorJörg BreitungArticleFirst Online: 30 September 2010 259 Downloads 1 Citations Download to read the full article textCopyright information© Springer-Verlag 2010Authors and AffiliationsBadi H. Baltagi1Email authorJörg Breitung21.Center for Policy Research, Syracuse UniversitySyracuseUSA2.University of Bonn, Institute of EconometricsBonnGermany