| 1. | 
        
    Luxembourg : Council of the European Communities. General Secretariat, 1988, c1987.Eighth edition.
 
English | A 41C410(113:111) CEC.E(8)SUPP | 
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                | 2. | 
        
    Luxembourg : Office des publications officielles des Communautés européennes, 1987, ©1986.Third rev.&corr.
 
French | A 41C410(111:113) CEC.E(3) | 
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                | 3. | 
        
    Bruxelles : Editions Delta, 1991.Fourth edition.
 
English | A 62(1) EUR | 
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