1. Where an undertaking included in a consolidation has an associated undertaking, that associated undertaking shall be shown in the consolidated balance sheet as a separate item with an appropriate heading.
2. When this Article is applied for the first time to an associated undertaking, that associated undertaking shall be shown in the consolidated balance sheet either:
(a) at its book value calculated in accordance with the measurement rules laid down in Chapters 2 and 3. The difference between that value and the amount corresponding to the proportion of capital and reserves represented by the participating interest in that associated undertaking shall be disclosed separately in the consolidated balance sheet or in the notes to the consolidated financial statements. That difference shall be calculated as at the date on which that method is used for the first time; or
(b) at an amount corresponding to the proportion of the associated undertaking's capital and reserves represented by t
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