20 June 2022 IGE/GL/1 Edition 3 - Planning of gas distribution systems of maximum operating pressure (MOP) not exceeding 16 bar
1 March 2018 IGEM/GL/2 Edition 3 - Planning of gas transmission and storage systems operating at pressures exceeding 16 bar
20 June 2022 IGEM/GL/9 Edition 2- Guidance for large gas consumers in dealing with natural gas supply emergencies