4) Rec. 500-3, “Method for the Subjective Assessment of the Quality of Television Pictures”, CCIR Recommendations and Reports of the CCIR, 1986, Vol. XI-Part 1, Geneva (1986)
5) Rec. 500-3 (Mod F), “Method for the Subjective Assessment of the Quality of Television Pictures”, CCIR XVIIth Plenary Assembly, Duesseldolf, 1990