1. Peri RUNDFLEX https://www.peri.com (accessed Nov 2017).
2. RMD Kwikform Trapeze https://www.rmdkwikform.com (accessed Nov 2017).
3. Doka h20 https://www.doka.com (accessed Nov 2017).
4. Nedcam — architectural solutions https://www.nedcam.com (accessed Nov 2017).
5. Advanced construction technology;Chudley,2012