Ed J. Christopher

HOUSEHOLD TRAVEL SURVEY NONRESPONSE ESTIMATES: THE CHICAGO EXPERIENCE

Ashish Sen, Siim Sööt, A. Sen, 1995 .

Chicago Area Transportation Study (CATS): Methodological Overview

Ed J. Christopher, Anne C. Ghislandi, Alan R. Fijal, 1994 .

CATS 1990 household travel survey : technical documentation for the household, person and trip files

Ed J. Christopher, Anne C. Ghislandi, Alan R. Fijal, 1994 .