posted at the eScholarship Repository, University of California. http://repositories.cdlib.org/uclastat/papers/2003010112 Torgerson, Warren S. (1958), New York: Wile Theory and Method of Scaling,
posted at the eScholarship Repository, University of California. http://repositories.cdlib.org/uclastat/papers/2003010112 Torgerson, Warren S. (1958), Theory and Method of Scaling, New York: Wile