Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleUnbiased instrumental variables estimation under known first-stage sign.AuthorsAndrews, Isaiah; Armstrong, Timothy B.PublicationQuantitative Economics, 2017, Vol 8, Issue 2, p479ISSN1759-7323Publication typeArticleDOI10.3982/QE700