As regards occupational social security schemes for self-employed persons, Member States may defer compulsory application of the principle of equal treatment with regard to:
(a)
determination of pensionable age for the granting of old-age or retirement pensions, and the possible implications for other benefits:
(i)
either until the date on which such equality is achieved in statutory schemes,
(ii)
or, at the latest, until such equality is prescribed by a directive;
(b)
survivors' pensions until Community law establishes the principle of equal treatment in statutory social security schemes in that regard;
(c)
the application of Article 9(1)(i) in relation to the use of actuarial calculation factors, until 1 January 1999 or for Member States whose accession took place after that date until the date that Directive 86/378/EEC became applicable in their territory.