The emergence of Jus cogens:

• Vienna Convention on the Law of Treaties (see Artiche 53, 64 and 66, lett. a)
  [www.un.org/law/ilc/texts/treatfra.htm]

Instances of peremptory norms:

• Art. 19 of the ILC Draft Articles on State Responsibility, as adopted on first reading in 1996 (click on "State responsibility" and then on "Article 19")
  [www.un.org./law/ilc/reports/1996/96repfra.htm]
• Commentary on Article 40, para. 2, of the ILC Draft Article on State Responsibility, as adopted on second reading in 2001
  [www.un.org/law/ilc/texts/State_responsibility/responsibility_commentaries(e).pdf#pagemode=bookmarks]
• Hungarian Constitutional Court , decision No 53/1993 (see section V of the judgement)
  [www.icrc.org/ihl-nat.nsf/46707c419d6bdfa24125673e00508145/
  e781668ba0b17804c1256b220039e303?OpenDocument]
• International Criminal Tribunal for the former Yugoslavia, Furundzija, judgement of 10 December 1998, §§153-157
  [www.un.org/icty/furundzija/trialc2/judgement/index.htm]
• House of Lords, Pinochet, 24 March 1999, Opinions of Lord Hope de Craighead and of Lord Millet on the jus cogens nature of the customary rule banning torture
  [www.publications.parliament.uk/pa/ld199899/ldjudgmt/jd990324/pino1.htm]
• International Criminal Tribunal for the former Yugoslavia, Kupreškic, §14 January 2000, §520
  [www.un.org/icty/kupreskic/trialc2/judgement/index.htm]

• International Criminal Tribunal for the former Yugoslavia, Furundzija, judgement of 10 December 1998, §§154-157
  [www.un.org/icty/furundzija/trialc2/judgement/index.htm]
• Arbitration Commission on Yugoslavia, Opinion no. 10
  [www.ejil.org/journal/Vol4/No1/art8-07.html#TopOfPage]

• Human Rights Committee, General Comment no. 24, §8
  [www.unhchr.ch/tbs/doc.nsf/(Symbol)/69c55b086f72957ec12563ed004ecf7a?Opendocument]

• Resolution of the Institut de droit international on extradition treaties (1983)
  [www.idi-iil.org/idiE/resolutionsE/1983_camb_03_en.PDF]