73/405/EØF: Rådets Direktiv af 22. november 1973 om harmonisering af medlemsstaternes lovgivning om kontrolmetoderne for de anionaktive stoffers biologiske nedbrydningsevne EFT L347 17.12.73 s.53.
73/405/EEC: Council Directive of 22 November 1973 on the approximation of the laws of the Member States relating to methods of testing the biodegradability of anionic surfactants OJ L347 17.12.73 p.53. M by 382L0243 (OJ L 109 22.04.82 p. 18.)