Krippendorff, Klaus. Information theory : structural models for qualitative data / Klaus Krippendorff. - Beverly Hills : Sage, 1986. - 96 p. - Sage university papers series. Quantitative applications in the social sciences ; no.07-062. . ISBN: 0803921322 0803920512 LCCN: 87222672 Subjects--Topical Terms: Information theory.Social sciences--Mathematics.