1. Biegus A, Kowal A. Opinion concerning strength of school sport hall in Marcinowice, Wroclaw, 14.01.2010.
2. Permit and executive design of the storage ELMOR S.A. hall in Gdansk, Slaskie Konsorcjum Ekologiczne sp. z o.o., Katowice, ul. Korfantego 125a.
3. DIN 18800:1990 Stahlbauten, Stabilitätsfalle, Knicken von Stäben und Stabwerken.
4. PN-EN 1991-1-3:2006 Eurocode 1: Actions on structures – Part 1–3: General actions, Snow loads.
5. PN-EN 1991-1-4:2008 Eurocode 1: Actions on structures – Part 1–4: General actions, Wind actions.