Media type: E-Article Title: Three-Stage DEA Models for Incorporating Exogenous Inputs Contributor: Estelle, Sarah M.; Johnson, Andrew; Ruggiero, John Published: Elsevier BV, 2009 Published in: SSRN Electronic Journal (2009) Language: English DOI: 10.2139/ssrn.1480785 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: