1. Allnatt, J.W. and Corbett, J.M. To be published: Ergonomics. Adaptation in observers during television quality-grading tests.
2. Television co-channel interference, with PAL colour transmissions;Brown,1968
3. CCIR XIIth Plenary Assembley;CCIR,1970
4. Effects of observer adaptation on the results of television quality gradingtests;Corbett,1970
5. Geddes, W.K.E. 1963 Private Communication