Related Rule
Practice Relating to Rule 37. Open Towns and Non-Defended Localities
Section A. Establishment of open towns
Argentina’s Law of War Manual (1989) provides for the possibility of establishing undefended areas and refers to the conditions set out for this purpose in Article 60 of the 1977 Additional Protocol I. 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 4.06.