Соответствующая норма
Austria
Practice Relating to Rule 85. The Use of Incendiary Weapons against Combatants
Section A. The use of incendiary weapons in general
In 1977, during a debate in the First Committee of the UN General Assembly, Austria stated that development, production and use of incendiary weapons should be banned. 
Austria, Statement before the First Committee of the UN General Assembly, UN Doc. A/C.1/32/PV.13, 27 October 1977, p. 28.