Gujarati,Damodar N. Essentials of Econometrics/ Damodar N. Gujarati. - 4th ed. - Boston : McGraw-Hill, 2006. - xxii, 554 p. ; ill. ; includes index ISBN: 9780071276078 Subjects--Topical Terms: Econometrics LC Class. No.: HB 139 .G85 2006