Around Società Industriale Metallurgica di Napoli (S.I.M.E.T.), Meroni & Co. Industrie Metallurgiche, Erba, Meroni & Co. Industrie Metallurgiche, Milan, Fer.Ro (Ferriere Rossi) and Acciaierie San Michele v High Authority of the European Coal and Steel Community (C-36/58, C-37/58, C-38/58, C-40/58, C-41/58)
5 laws and 4 links: citations, amendments, and UK copies of EU law. Bigger circles are relied on more.