Соответствующая норма
Practice Relating to Rule 10. Civilian Objects’ Loss of Protection from Attack
Section A. Civilian objects used for military purposes
Ukraine’s IHL Manual (2004) states:
The following methods of warfare shall be prohibited:
- use of firearms in centres of population, ports, homes, buildings, churches or hospitals (provided that they are not used for military purposes). 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.3.2.