www.ps.pl – Szczecin University of Technology Electrical Faculty
www.iizp.uz.zgora.pl – University of Zielona Góra Institute of Logistics and Information Systems
www.pkn.pl – Polish Committee for Standardization [PKN]
www.put.poznan.pl – Poznań University of Technology Institute of Applied Mechanics
www.itb.pl – Building Research Institute
www.inig.pl – Oil and Gas Institute
www.kominypolskie.com.pl – Kominy Polskie [Polish Chimneys] Association