13. 1) Pour le calcul du facteur «gain» (earnings factor) en vue de la détermination du droit aux prestations prévues pa
r la législation du Royaume-Uni, sous réserve du paragraphe 15, chaque semaine pendant laquelle le travailleur salarié o
u non salarié a été soumis à la législation d'un autre État membre et qui a commencé au cours de l'année d'imposition sur le revenu de référence, au sens de la législat
ion du Royaume-Uni, sera prise en compte sel ...[+++]on les modalités suivantes:13 (1) For the purpose of calculating an earnings factor with a view to determining the right to benefits under United Kingdom legislation, subject to paragraph 15, each week during w
hich an employed or self-employed person has been subject to the legislation of another Member State and which commenced during the relevant income tax year within the meaning of United Kingdom legislation shall be taken into account in the following way: (a) (i) for each week of insurance, employment, or residence as an employed person the person concerned shall be deemed to have paid contributions as an employed earner on the basis of earnings equivalent t
...[+++]o two-thirds of that year's upper earnings limit;