| uic.asso.fr | UIC - International Union of Railways |
| cibse.org | Chartered Institution of Building Services Engineers (CIBSE) |
| ciob.org.uk | The Chartered Institute of Building |
| cimac.com | Cimac - The International Council On Combustion Engines |
| ccsds.org | Consultative Committee for Space Data Systems (CCSDS) |
| bisfa.org | BISFA. International Bureau for the Standardization of Man-made Fibers |
| uicb.org | Uicb: International Union Of Building Centre |
| icoste.org | International Cost Engineering Council (ICEC) |
| ice.org.uk | Institution of Civil Engineers |
| cstb.fr | Centre scientifique et technique du bâtiment (CSTB) |
Netherlands , ,