See, in particular, judgments of the Court of Justice of 3 July 1986, Deborah Lawrie-Blum v Land Baden-Württemberg, C-66/85, ECLI:EU:C:1986:284, paragraphs 16 and 17; of 21 June 1988, Steven Malcolm Brown v The Secretary of State for Scotland, C-197/86, ECLI:EU:C:1988:323, paragraph 21; and of 31 May 1989, I. Bettray v Staatssecretaris van Justitie, C-344/87, ECLI:EU:C:1989:226, paragraphs 15 and 16.
Féach, go háirithe, breithiúnais na Cúirte Breithiúnais an 3 Iúil 1986, Deborah Lawrie-Blum v Land Baden-Württemberg, C-66/85, ECLI:EU:C:1986:284, mír 16 agus mír 17, an 21 Meitheamh 1988, Steven Malcolm Brown v The Secretary of State for Scotland, C-197/86, ECLI:EU:C:1988:323, mír 21, agus an 31 Bealtaine 1989, I. Bettray v Staatssecretaris van Justitie, C-344/87, ECLI:EU:C:1989:226, mír 15 agus mír 16.