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— 41 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Laying of parquet flooring and wood block flooring— 15 стр.