Article 58
Calculation of cash benefits 1. The competent institution of a Member State whose legislation provides that the calculation of cash benefits shall be based on an average wage or salary shall determine such average wage or salary exclusively by reference to wages or salaries recorded during the periods completed under the said legislation. 2. The competent institution of a Member State whose legislation provides that the calculation of cash benefits shall be based on a standard wage or salary shall determine such average wage or salary exclusively by reference where appropriate, the average of the standard wages or salaries corresponding to the periods completed under the said legislation. 3. The competent institution of a Member State whose legislation provides that the amount of cash benefits shall vary with the number of members in the family shall take into account also the members of the family of the person concerned who are residing in the territory of another Member State, as if they were residing in the territory of the competent State.