1. DIN (Deutsches Institut für Normung) (2004) DIN 1052-1-1:2004-08: Structural Use of Timber – Design and Construction. DIN, Berlin, Germany.
2. DIN (2010a) DIN EN 1995-1-1:2010-12: Eurocode 5: Design of Timber Structures – Part 1-1: General – Common Rules and Rules for Buildings. DIN, Brussels, Belgium.
3. DIN (2010b) DIN EN 1991-1-1:2010-12: Eurocode 1: Actions on Structures - Part 1-1: General Actions - Densities, Self-Weight, Imposed Loads for Buildings; German Version EN 1991-1-1:2002+AC:2009. DIN, Berlin, Germany.
4. DIN (2016a) DIN EN 338:2016-07: Structural Timber – Strength Classes. DIN, Brussels, Belgium.