RECOMMENDATION ITU-R BS.1283 - Subjective assessment of sound quality - a guide to existing recommendations
APPENDIX 1 - General considerations governing the range of applications of existing ITU-R Recommendations relating to ...
APPENDIX 2 - Bibliography of existing Recommendations and other relevant documents of international organizations concerning 
1 ITU-R documents
    1.1 ITU-R Recommendations
    1.2 Other ITU-R documents
2 Documents of other International Organizations
    2.1 Recommendations
    2.2 Other documents
3 Other relevant literature