The Member States 25 March 1957, Consolidated version of the Treaty establishing the European Atomic Energy CommunityTITLE II - Provisions for the encouragement of progress in the field of nuclear energyCHAPTER 8 - PROPERTY OWNERSHIPArticle 90

2. Variations in value affecting the quantities of special fissile material shall be expressed for accounting purposes in such a way as not to give rise to any loss or gain to the Community. Any loss or gain shall be borne by or accrue to the holder. 3. Balances arising from the transactions referred to above shall become payable forthwith upon the request of the creditor. 4.