American Economic Journal : [elektronický zdroj]. American Economic Association. Dostupné na internetu: <http://web.ebscohost.com/ehost/detail?sid=4fda1014-b272-4cdd-9ca3-180fa350e9f4%40sessionmgr110&vid=1&hid=113&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=eoh&jid=3ANI> ISSN 1945-7707.