Media type: E-Article Title: Dif-in-Dif Estimators of Multiplicative Treatment Effects Contributor: Ciani, Emanuele; Fisher, Paul Published: Elsevier BV, 2014 Published in: SSRN Electronic Journal (2014) Language: English DOI: 10.2139/ssrn.2566252 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: