1. Towards a behavioral theory of communication;Ackoff;Management Sci.,1958
2. On man-computer dialogue;Ambrozy;Int. J. Man-Machine Studies,1971
3. An Introduction to Cybernetics;Ashby,1963
4. Free text retrieval evaluation;Atherton,1972
5. DOD user needs study;Auerbach Corporation;Final Tech. Rep.1151-TR-3,1965