Norma relacionada
Sweden
Practice Relating to Rule 37. Open Towns and Non-Defended Localities
Section C. Attacks on open towns and non-defended localities
Sweden’s IHL Manual (1991) refers to Article 59 of the 1977 Additional Protocol I and states that the chief rule relating to non-defended localities has the status of customary law. 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 2.2.3, p. 19.