Maddala, G. S. Limited-dependent and qualitative variables in econometrics / - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1983. - xi, 401 p. ; 24 cm. Includes index. ISBN: 052124143X Subjects--Topical Terms: Econometrics. Dewey Class. No.: 330 CAM 1983 A075 Or.